Implement RFC 2585: unsafe blocks in unsafe fn #71862

LeSeulArtichaut · 2020-05-03T21:41:39Z

Tracking issue: #71668
r? @RalfJung cc @nikomatsakis

RalfJung · 2020-05-03T21:45:13Z

I'm afraid I cannot review this, the code is way outside my comfort zone.
r? @nikomatsakis (feel free to reassign to someone more appropriate)

RalfJung · 2020-05-03T21:45:48Z

Cc @matthewjasper maybe you can help with review?

LeSeulArtichaut · 2020-05-04T07:22:51Z

Maybe @hanna-kruppe (who reviewed another PR I had on the same part of the code), if you have some time?

hanna-kruppe · 2020-05-04T07:44:56Z

Sorry, I don't have the time.

LeSeulArtichaut · 2020-05-04T08:59:07Z

Sorry, I don't have the time.

No problem, thanks for answering!

src/test/ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn.rs

src/test/ui/unsafe/rfc-2585-unsafe_op_in_unsafe_fn.rs

src/librustc_mir/transform/check_unsafety.rs

src/librustc_mir_build/build/block.rs

nikomatsakis · 2020-05-04T20:14:51Z

@RalfJung -- it looks like you've found a bunch of things to work on, can you maybe ping me when the PR is ready for me to take a look? I can assign to you in the meantime..?

RalfJung · 2020-05-04T22:45:06Z

I can review the tests, but that's about it. Sure, I'll re-assign to you once those look good to me.
r? @RalfJung

rust-highfive · 2020-05-13T23:02:01Z

The job x86_64-gnu-llvm-8 of your PR failed (pretty log, raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

##[section]Starting: Linux x86_64-gnu-llvm-8
##[section]Starting: Initialize job
Agent name: 'Azure Pipelines 10'
Agent machine name: 'fv-az578'
Current agent version: '2.168.2'
##[group]Operating System
16.04.6
LTS
LTS
##[endgroup]
##[group]Virtual Environment
Environment: ubuntu-16.04
Version: 20200430.2
Included Software: https://github.com/actions/virtual-environments/blob/ubuntu16/20200430.2/images/linux/Ubuntu1604-README.md
##[endgroup]
Agent running as: 'vsts'
Prepare build directory.
Set build variables.
Download all required tasks.
Download all required tasks.
Downloading task: Bash (3.163.1)
Checking job knob settings.
   Knob: AgentToolsDirectory = /opt/hostedtoolcache Source: ${AGENT_TOOLSDIRECTORY} 
   Knob: AgentPerflog = /home/vsts/perflog Source: ${VSTS_AGENT_PERFLOG} 
Start tracking orphan processes.
##[section]Finishing: Initialize job
##[section]Starting: Configure Job Name
==============================================================================
---
========================== Starting Command Output ===========================
[command]/bin/bash --noprofile --norc /home/vsts/work/_temp/99ca2143-edde-42c5-890b-0e8fbcaba055.sh

##[section]Finishing: Disable git automatic line ending conversion
##[section]Starting: Checkout rust-lang/rust@refs/pull/71862/merge to s
Task         : Get sources
Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.
Version      : 1.0.0
Author       : Microsoft
---
##[command]git remote add origin https://github.com/rust-lang/rust
##[command]git config gc.auto 0
##[command]git config --get-all http.https://github.com/rust-lang/rust.extraheader
##[command]git config --get-all http.proxy
##[command]git -c http.extraheader="AUTHORIZATION: basic ***" fetch --force --tags --prune --progress --no-recurse-submodules --depth=2 origin +refs/heads/*:refs/remotes/origin/* +refs/pull/71862/merge:refs/remotes/pull/71862/merge
---
 ---> cb2676f08729
Step 5/8 : ENV RUST_CONFIGURE_ARGS       --build=x86_64-unknown-linux-gnu       --llvm-root=/usr/lib/llvm-8       --enable-llvm-link-shared       --set rust.thin-lto-import-instr-limit=10
 ---> Using cache
 ---> df25ce111862
Step 6/8 : ENV SCRIPT python2.7 ../x.py test --exclude src/tools/tidy &&            python2.7 ../x.py test src/test/mir-opt --pass=build                                   --target=armv5te-unknown-linux-gnueabi &&            python2.7 ../x.py test src/tools/tidy
 ---> 599b9ac96b27
Step 7/8 : ENV NO_DEBUG_ASSERTIONS=1
 ---> Using cache
 ---> 091087e35a36
---
   Compiling fmt_macros v0.0.0 (/checkout/src/libfmt_macros)
   Compiling chalk-rust-ir v0.10.0
   Compiling rustc_ast_pretty v0.0.0 (/checkout/src/librustc_ast_pretty)
   Compiling rustc_hir v0.0.0 (/checkout/src/librustc_hir)
   Compiling rustc_query_system v0.0.0 (/checkout/src/librustc_query_system)
   Compiling chalk-solve v0.10.0
   Compiling rustc_hir_pretty v0.0.0 (/checkout/src/librustc_hir_pretty)
   Compiling rustc_parse v0.0.0 (/checkout/src/librustc_parse)
   Compiling rustc_ast_lowering v0.0.0 (/checkout/src/librustc_ast_lowering)
---
   Compiling fmt_macros v0.0.0 (/checkout/src/libfmt_macros)
   Compiling chalk-ir v0.10.0
   Compiling rustc_ast_pretty v0.0.0 (/checkout/src/librustc_ast_pretty)
   Compiling rustc_hir v0.0.0 (/checkout/src/librustc_hir)
   Compiling rustc_query_system v0.0.0 (/checkout/src/librustc_query_system)
   Compiling chalk-rust-ir v0.10.0
   Compiling rustc_hir_pretty v0.0.0 (/checkout/src/librustc_hir_pretty)
   Compiling rustc_parse v0.0.0 (/checkout/src/librustc_parse)
   Compiling rustc_ast_lowering v0.0.0 (/checkout/src/librustc_ast_lowering)
---
......................................................i............................................. 1800/10166
............................................................F....................................... 1900/10166
........................................................................i..i........................ 2000/10166
.................................................................................................... 2100/10166
..............................................................iiiii................................. 2200/10166
.................................................................................................... 2400/10166
...F................................................................................................ 2500/10166
.................................................................................................... 2600/10166
.................................................................................................... 2700/10166
---
.................................................................................................... 3200/10166
.i.................................................................................................. 3300/10166
.................................................................................................... 3400/10166
.................................................................................................... 3500/10166
............ii.................................................F.F.................................. 3600/10166
...................................F................................................................ 3800/10166
........i.................F......................................................................... 3900/10166
.................................................................................................... 4000/10166
.................................................................................................... 4100/10166
---
.................................................................................................... 5200/10166
.................................................................................................... 5300/10166
........F.................i......................................................................... 5400/10166
...................i................................................................................ 5500/10166
..........................ii.ii........i...i........................................................ 5600/10166
...........................................................................i........................ 5800/10166
.................................................................................................... 5900/10166
......................ii.....................................i...................................... 6000/10166
.................................................................................................... 6100/10166
.................................................................................................... 6100/10166
.................................................................................................... 6200/10166
...................................................................................ii...i..ii....... 6300/10166
.................................................................................................... 6500/10166
.................................................................................................... 6600/10166
.................................................................................................... 6700/10166
.................................................................................................... 6700/10166
................i..ii............................................................................... 6800/10166
.................................................................................................... 7000/10166
......................................................................i............................. 7100/10166
.................................................................................................... 7200/10166
.................................................................................................... 7300/10166
---
.................................................................................................... 8100/10166
.................................................................................................... 8200/10166
.......................................................................................i............ 8300/10166
....................................................................F............................... 8400/10166
........................................Fiiiiii.iiiii.iF............................................ 8500/10166
.................................................................................................... 8700/10166
.................................................................................................... 8800/10166
......F...F......................................................................................... 8900/10166
.................................................................................................... 9000/10166
---
....................................................................i............................... 9600/10166
.................................................................................................... 9700/10166
.................................................................................................... 9800/10166
...................................................F................................................ 9900/10166
...............F.FFFFFFF...FF.FFFF.................................................................. 10000/10166
..................................................................
failures:
thread 'main' panicked at 'Some tests failed', src/tools/compiletest/src/main.rs:348:22


---- [ui] ui/async-await/async-unsafe-fn-call-in-safe.rs stdout ----
diff of stderr:

- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
2   --> $DIR/async-unsafe-fn-call-in-safe.rs:12:5
3    |
4 LL |     S::f();
6    |
7    = note: consult the function's documentation for information on how to avoid undefined behavior
8 
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
18   --> $DIR/async-unsafe-fn-call-in-safe.rs:17:5
19    |
20 LL |     S::f();
22    |
23    = note: consult the function's documentation for information on how to avoid undefined behavior
24 
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
26   --> $DIR/async-unsafe-fn-call-in-safe.rs:18:5
27    |
28 LL |     f();


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/async-await/async-unsafe-fn-call-in-safe/async-unsafe-fn-call-in-safe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args async-await/async-unsafe-fn-call-in-safe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/async-await/async-unsafe-fn-call-in-safe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/async-await/async-unsafe-fn-call-in-safe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2018" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/async-await/async-unsafe-fn-call-in-safe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/async-await/async-unsafe-fn-call-in-safe.rs:12:5
   |
LL |     S::f(); //~ ERROR call to unsafe function is unsafe
   |     ^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/async-await/async-unsafe-fn-call-in-safe.rs:13:5
---

error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/async-await/async-unsafe-fn-call-in-safe.rs:17:5
   |
LL |     S::f(); //~ ERROR call to unsafe function is unsafe
   |     ^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/async-await/async-unsafe-fn-call-in-safe.rs:18:5
---
2   --> $DIR/issue-53114-safety-checks.rs:23:13
3    |
4 LL |     let _ = &p.b;

9    = note: for more information, see issue #46043 <***/issues/46043>
10    = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
13   --> $DIR/issue-53114-safety-checks.rs:26:13
14    |
---
- warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
+ warning: borrow of packed field is unsafe and requires unsafe block (error E0133)
21   --> $DIR/issue-53114-safety-checks.rs:29:17
22    |
23 LL |     let (_,) = (&p.b,);

27    = note: for more information, see issue #46043 <***/issues/46043>
28    = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
31   --> $DIR/issue-53114-safety-checks.rs:31:17
32    |
32    |
33 LL |     let (_,) = (u1.a,);
35    |
36    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
37 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
39   --> $DIR/issue-53114-safety-checks.rs:32:17
40    |
41 LL |     let (_,) = (&u2.a,);
43    |
44    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
45 
- warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
- warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
+ warning: borrow of packed field is unsafe and requires unsafe block (error E0133)
47   --> $DIR/issue-53114-safety-checks.rs:39:11
48    |
49 LL |     match &p.b  { _ => { } }

53    = note: for more information, see issue #46043 <***/issues/46043>
54    = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
57   --> $DIR/issue-53114-safety-checks.rs:41:11
58    |
58    |
59 LL |     match u1.a  { _ => { } }
61    |
62    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
63 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
65   --> $DIR/issue-53114-safety-checks.rs:42:11
66    |
67 LL |     match &u2.a { _ => { } }
69    |
70    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
71 
- warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
- warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
+ warning: borrow of packed field is unsafe and requires unsafe block (error E0133)
73   --> $DIR/issue-53114-safety-checks.rs:45:12
74    |
75 LL |     match (&p.b,)  { (_,) => { } }

79    = note: for more information, see issue #46043 <***/issues/46043>
80    = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
83   --> $DIR/issue-53114-safety-checks.rs:47:12
84    |
84    |
85 LL |     match (u1.a,)  { (_,) => { } }
87    |
88    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
89 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
91   --> $DIR/issue-53114-safety-checks.rs:48:12
92    |
93 LL |     match (&u2.a,) { (_,) => { } }

The actual stderr differed from the expected stderr.
The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/binding/issue-53114-safety-checks/issue-53114-safety-checks.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args binding/issue-53114-safety-checks.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/binding/issue-53114-safety-checks.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/binding/issue-53114-safety-checks" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/binding/issue-53114-safety-checks/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
warning: borrow of packed field is unsafe and requires unsafe block (error E0133)
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:23:13
   |
LL |     let _ = &p.b;  //~ WARN    E0133
   |
   |
   = note: `#[warn(safe_packed_borrows)]` on by default
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <***/issues/46043>
   = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:26:13
   |
   |
LL |     let _ = &u2.a; //~ ERROR  [E0133]
   |             ^^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

warning: borrow of packed field is unsafe and requires unsafe block (error E0133)
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:29:17
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:29:17
   |
LL |     let (_,) = (&p.b,);  //~ WARN     E0133
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <***/issues/46043>
   = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:31:17
   |
   |
LL |     let (_,) = (u1.a,);  //~ ERROR   [E0133]
   |                 ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:32:17
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:32:17
   |
LL |     let (_,) = (&u2.a,); //~ ERROR   [E0133]
   |                 ^^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

warning: borrow of packed field is unsafe and requires unsafe block (error E0133)
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:39:11
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:39:11
   |
LL |     match &p.b  { _ => { } } //~ WARN     E0133
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <***/issues/46043>
   = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:41:11
   |
   |
LL |     match u1.a  { _ => { } } //~ ERROR   [E0133]
   |           ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:42:11
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:42:11
   |
LL |     match &u2.a { _ => { } } //~ ERROR   [E0133]
   |           ^^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

warning: borrow of packed field is unsafe and requires unsafe block (error E0133)
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:45:12
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:45:12
   |
LL |     match (&p.b,)  { (_,) => { } } //~ WARN     E0133
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <***/issues/46043>
   = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:47:12
   |
   |
LL |     match (u1.a,)  { (_,) => { } } //~ ERROR   [E0133]
   |            ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:48:12
  --> /checkout/src/test/ui/binding/issue-53114-safety-checks.rs:48:12
   |
LL |     match (&u2.a,) { (_,) => { } } //~ ERROR   [E0133]
   |            ^^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior


error: aborting due to 7 previous errors; 4 warnings emitted
For more information about this error, try `rustc --explain E0133`.

------------------------------------------

---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
10   --> $DIR/const-extern-fn-requires-unsafe.rs:6:17
11    |
12 LL |     let a: [u8; foo()];

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/const-extern-fn/const-extern-fn-requires-unsafe/const-extern-fn-requires-unsafe.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/const-extern-fn/const-extern-fn-requires-unsafe/const-extern-fn-requires-unsafe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args consts/const-extern-fn/const-extern-fn-requires-unsafe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/consts/const-extern-fn/const-extern-fn-requires-unsafe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/const-extern-fn/const-extern-fn-requires-unsafe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/const-extern-fn/const-extern-fn-requires-unsafe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---

error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/consts/const-extern-fn/const-extern-fn-requires-unsafe.rs:6:17
   |
LL |     let a: [u8; foo()];
   |                 ^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error: aborting due to 2 previous errors

---

---- [ui] ui/consts/min_const_fn/min_const_fn_unsafe_bad.rs stdout ----
diff of stderr:

34    = note: see issue #57563 <***/issues/57563> for more information
35    = help: add `#![feature(const_fn)]` to the crate attributes to enable
- error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
+ error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
38   --> $DIR/min_const_fn_unsafe_bad.rs:1:77
39    |
39    |
40 LL | const fn bad_const_fn_deref_raw(x: *mut usize) -> &'static usize { unsafe { &*x } }

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad/min_const_fn_unsafe_bad.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad/min_const_fn_unsafe_bad.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args consts/min_const_fn/min_const_fn_unsafe_bad.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0658]: dereferencing raw pointers in constant functions is unstable
  --> /checkout/src/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad.rs:1:77
   |
LL | const fn bad_const_fn_deref_raw(x: *mut usize) -> &'static usize { unsafe { &*x } } //~ is unsafe
   |
   |
   = note: see issue #51911 <***/issues/51911> for more information

error[E0658]: dereferencing raw pointers in constant functions is unstable
  --> /checkout/src/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad.rs:4:70
   |
   |
LL | const unsafe fn bad_const_unsafe_deref_raw(x: *mut usize) -> usize { *x }
   |
   |
   = note: see issue #51911 <***/issues/51911> for more information

error[E0658]: dereferencing raw pointers in constant functions is unstable
  --> /checkout/src/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad.rs:7:83
   |
   |
LL | const unsafe fn bad_const_unsafe_deref_raw_ref(x: *mut usize) -> &'static usize { &*x }
   |
   |
   = note: see issue #51911 <***/issues/51911> for more information

error[E0723]: accessing union fields is unstable
  --> /checkout/src/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad.rs:14:5
   |
   |
LL |     Foo { x: () }.y
   |     ^^^^^^^^^^^^^^^
   |
   = note: see issue #57563 <***/issues/57563> for more information
   = help: add `#![feature(const_fn)]` to the crate attributes to enable
error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/consts/min_const_fn/min_const_fn_unsafe_bad.rs:1:77
   |
   |
LL | const fn bad_const_fn_deref_raw(x: *mut usize) -> &'static usize { unsafe { &*x } } //~ is unsafe
   |                                                                             ^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to 5 previous errors

Some errors have detailed explanations: E0133, E0658, E0723.
For more information about an error, try `rustc --explain E0133`.
---
4 LL |     f();


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/error-codes/E0133/E0133.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args error-codes/E0133.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/error-codes/E0133.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/error-codes/E0133" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/error-codes/E0133/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---


---- [ui] ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn.rs stdout ----

error: /checkout/src/test/ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn.rs:1: unexpected error: '1:1: 1:33: the `unsafe_op_in_unsafe_fn` lint is unstable [E0658]'

error: /checkout/src/test/ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn.rs:1: unexpected error: '1:1: 1:33: the `unsafe_op_in_unsafe_fn` lint is unstable [E0658]'
error: 2 unexpected errors found, 0 expected errors not found
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn/auxiliary"
    Error {
        line_num: 1,
        kind: Some(
            Error,
            Error,
        ),
        msg: "1:1: 1:33: the `unsafe_op_in_unsafe_fn` lint is unstable [E0658]",
    Error {
        line_num: 1,
        kind: Some(
            Error,
            Error,
        ),
        msg: "1:1: 1:33: the `unsafe_op_in_unsafe_fn` lint is unstable [E0658]",
]

thread '[ui] ui/feature-gates/feature-gate-unsafe_block_in_unsafe_fn.rs' panicked at 'explicit panic', src/tools/compiletest/src/runtest.rs:1460:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
---
4 LL |     test::free();


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/foreign-unsafe-fn-called/foreign-unsafe-fn-called.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args foreign-unsafe-fn-called.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/foreign-unsafe-fn-called.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/foreign-unsafe-fn-called" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/foreign-unsafe-fn-called/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/intrinsics/issue-28575/issue-28575.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args intrinsics/issue-28575.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/intrinsics/issue-28575.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/intrinsics/issue-28575" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/intrinsics/issue-28575/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/intrinsics/issue-28575.rs:8:5
   |
LL |     FOO() //~ ERROR: use of extern static is unsafe
   |     ^^^ use of extern static
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
2   --> $DIR/unchecked_math_unsafe.rs:5:15
3    |
4 LL |     let add = std::intrinsics::unchecked_add(x, y);
6    |
7    = note: consult the function's documentation for information on how to avoid undefined behavior
8 
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
10   --> $DIR/unchecked_math_unsafe.rs:6:15
11    |
12 LL |     let sub = std::intrinsics::unchecked_sub(x, y);
14    |
15    = note: consult the function's documentation for information on how to avoid undefined behavior
16 
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
18   --> $DIR/unchecked_math_unsafe.rs:7:15
19    |
20 LL |     let mul = std::intrinsics::unchecked_mul(x, y);

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/intrinsics/unchecked_math_unsafe/unchecked_math_unsafe.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/intrinsics/unchecked_math_unsafe/unchecked_math_unsafe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args intrinsics/unchecked_math_unsafe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/intrinsics/unchecked_math_unsafe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/intrinsics/unchecked_math_unsafe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/intrinsics/unchecked_math_unsafe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/intrinsics/unchecked_math_unsafe.rs:5:15
   |
LL |     let add = std::intrinsics::unchecked_add(x, y); //~ ERROR call to unsafe function
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/intrinsics/unchecked_math_unsafe.rs:6:15
  --> /checkout/src/test/ui/intrinsics/unchecked_math_unsafe.rs:6:15
   |
LL |     let sub = std::intrinsics::unchecked_sub(x, y); //~ ERROR call to unsafe function
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/intrinsics/unchecked_math_unsafe.rs:7:15
  --> /checkout/src/test/ui/intrinsics/unchecked_math_unsafe.rs:7:15
   |
LL |     let mul = std::intrinsics::unchecked_mul(x, y); //~ ERROR call to unsafe function
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error: aborting due to 3 previous errors

---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-14227/issue-14227.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-14227.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-14227.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-14227" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-14227/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-14227.rs:4:21
   |
LL | static CRASH: u32 = symbol;
   |                     ^^^^^^ use of extern static
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
- error[E0133]: use of extern static is unsafe and requires unsafe function or block
+ error[E0133]: use of extern static is unsafe and requires unsafe block
17   --> $DIR/issue-16538.rs:11:34
18    |
19 LL | static foo: *const Y::X = Y::foo(Y::x as *const Y::X);

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-16538/issue-16538.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-16538/issue-16538.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-16538.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-16538.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-16538" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-16538/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0015]: calls in statics are limited to constant functions, tuple structs and tuple variants
  --> /checkout/src/test/ui/issues/issue-16538.rs:11:27
   |
LL | static foo: *const Y::X = Y::foo(Y::x as *const Y::X);

error[E0277]: `*const usize` cannot be shared between threads safely
  --> /checkout/src/test/ui/issues/issue-16538.rs:11:1
   |
   |
LL | static foo: *const Y::X = Y::foo(Y::x as *const Y::X);
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `*const usize` cannot be shared between threads safely
   = help: the trait `std::marker::Sync` is not implemented for `*const usize`
   = note: shared static variables must have a type that implements `Sync`

error[E0133]: use of extern static is unsafe and requires unsafe block
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-16538.rs:11:34
   |
LL | static foo: *const Y::X = Y::foo(Y::x as *const Y::X);
   |
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0015, E0133, E0277.
For more information about an error, try `rustc --explain E0015`.
---
- error: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
+ error: borrow of packed field is unsafe and requires unsafe block (error E0133)
2   --> $DIR/issue-27060.rs:26:13
3    |
4 LL |     let _ = &good.data;

13    = note: for more information, see issue #46043 <***/issues/46043>
14    = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
- error: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
+ error: borrow of packed field is unsafe and requires unsafe block (error E0133)
17   --> $DIR/issue-27060.rs:28:13
18    |
18    |
19 LL |     let _ = &good.data2[0];

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-27060/issue-27060.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-27060/issue-27060.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-27060.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-27060.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-27060" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-27060/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error: borrow of packed field is unsafe and requires unsafe block (error E0133)
  --> /checkout/src/test/ui/issues/issue-27060.rs:26:13
   |
LL |     let _ = &good.data; //~ ERROR borrow of packed field is unsafe
   |
note: the lint level is defined here
  --> /checkout/src/test/ui/issues/issue-27060.rs:13:8
   |
   |
LL | #[deny(safe_packed_borrows)]
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <***/issues/46043>
   = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error: borrow of packed field is unsafe and requires unsafe block (error E0133)
  --> /checkout/src/test/ui/issues/issue-27060.rs:28:13
   |
   |
LL |     let _ = &good.data2[0]; //~ ERROR borrow of packed field is unsafe
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <***/issues/46043>
   = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error: aborting due to 2 previous errors


------------------------------------------
---
- error[E0133]: use of extern static is unsafe and requires unsafe function or block
+ error[E0133]: use of extern static is unsafe and requires unsafe block
2   --> $DIR/issue-28324.rs:5:24
3    |
4 LL | pub static BAZ: u32 = *&error_message_count;

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28324/issue-28324.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28324/issue-28324.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-28324.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-28324.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28324" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28324/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-28324.rs:5:24
   |
LL | pub static BAZ: u32 = *&error_message_count;
   |
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
2   --> $DIR/issue-28776.rs:4:5
3    |
4 LL |     (&ptr::write)(1 as *mut _, 42);

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28776/issue-28776.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28776/issue-28776.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-28776.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-28776.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28776" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-28776/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-28776.rs:4:5
   |
LL |     (&ptr::write)(1 as *mut _, 42);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error: aborting due to previous error

---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
2   --> $DIR/issue-3080.rs:7:5
3    |
4 LL |     X(()).with();

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-3080/issue-3080.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-3080/issue-3080.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-3080.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-3080.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-3080" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-3080/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-3080.rs:7:5
   |
LL |     X(()).with(); //~ ERROR requires unsafe function or block
   |     ^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error: aborting due to previous error

---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
10   --> $DIR/issue-43733.rs:22:5
11    |
12 LL |     std::thread::LocalKey::new(__getit);

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-43733/issue-43733.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-43733/issue-43733.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-43733.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-43733.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-43733" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-43733/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-43733.rs:18:5
   |
LL |     __KEY.get(Default::default) //~ ERROR call to unsafe function is unsafe
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-43733.rs:22:5
  --> /checkout/src/test/ui/issues/issue-43733.rs:22:5
   |
LL |     std::thread::LocalKey::new(__getit);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error: aborting due to 2 previous errors

---
- error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
+ error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
2   --> $DIR/issue-45087-unreachable-unsafe.rs:3:5
3    |
4 LL |     *(1 as *mut u32) = 42;

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45087-unreachable-unsafe/issue-45087-unreachable-unsafe.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45087-unreachable-unsafe/issue-45087-unreachable-unsafe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-45087-unreachable-unsafe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-45087-unreachable-unsafe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45087-unreachable-unsafe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45087-unreachable-unsafe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-45087-unreachable-unsafe.rs:3:5
   |
LL |     *(1 as *mut u32) = 42;
   |     ^^^^^^^^^^^^^^^^^^^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
- error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
+ error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
2   --> $DIR/issue-45729-unsafe-in-generator.rs:5:9
3    |
4 LL |         *(1 as *mut u32) = 42;

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45729-unsafe-in-generator/issue-45729-unsafe-in-generator.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45729-unsafe-in-generator/issue-45729-unsafe-in-generator.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-45729-unsafe-in-generator.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-45729-unsafe-in-generator.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45729-unsafe-in-generator" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-45729-unsafe-in-generator/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-45729-unsafe-in-generator.rs:5:9
   |
LL |         *(1 as *mut u32) = 42;
   |         ^^^^^^^^^^^^^^^^^^^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
2   --> $DIR/issue-47412.rs:11:11
3    |
4 LL |     match u.void {}
6    |
7    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
8 
- error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-47412/issue-47412.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-47412.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-47412.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-47412" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-47412/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-47412.rs:11:11
   |
LL |     match u.void {}
   |           ^^^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-47412.rs:17:11
  --> /checkout/src/test/ui/issues/issue-47412.rs:17:11
   |
LL |     match *ptr {}
   |           ^^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0133`.

---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
2   --> $DIR/issue-5844.rs:6:5
3    |
4 LL |     issue_5844_aux::rand();

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-5844/issue-5844.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-5844/issue-5844.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args issues/issue-5844.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/issues/issue-5844.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-5844" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/issues/issue-5844/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/issues/issue-5844.rs:6:5
   |
LL |     issue_5844_aux::rand(); //~ ERROR: requires unsafe
   |     ^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error: aborting due to previous error


For more information about this error, try `rustc --explain E0133`.

------------------------------------------


---- [ui] ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs stdout ----

- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
2   --> $DIR/safe-calls.rs:21:5
---
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
10   --> $DIR/safe-calls.rs:22:5
11    |
12 LL |     avx_bmi2();
14    |
15    = note: can only be called if the required target features are available
16 
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
18   --> $DIR/safe-calls.rs:23:5
19    |
20 LL |     Quux.avx_bmi2();
22    |
23    = note: can only be called if the required target features are available
24 
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
26   --> $DIR/safe-calls.rs:28:5
27    |
28 LL |     avx_bmi2();
30    |
31    = note: can only be called if the required target features are available
32 
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
34   --> $DIR/safe-calls.rs:29:5
35    |
36 LL |     Quux.avx_bmi2();
38    |
39    = note: can only be called if the required target features are available
40 
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
---
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
50   --> $DIR/safe-calls.rs:35:5
51    |
52 LL |     avx_bmi2();
54    |
55    = note: can only be called if the required target features are available
56 
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
58   --> $DIR/safe-calls.rs:36:5
59    |
60 LL |     Quux.avx_bmi2();
62    |
63    = note: can only be called if the required target features are available
64 
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
---
- error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe function or block
+ error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
74   --> $DIR/safe-calls.rs:45:18
75    |
76 LL | const name: () = sse2();

The actual stderr differed from the expected stderr.
The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls/safe-calls.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args rfcs/rfc-2396-target_feature-11/safe-calls.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:21:5
   |
LL |     sse2();              //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:22:5
   |
LL |     avx_bmi2();          //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:23:5
   |
LL |     Quux.avx_bmi2();     //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^^^^^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:28:5
   |
LL |     avx_bmi2();          //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:29:5
   |
LL |     Quux.avx_bmi2();     //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^^^^^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:34:5
   |
LL |     sse2();              //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:35:5
   |
LL |     avx_bmi2();          //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:36:5
   |
LL |     Quux.avx_bmi2();     //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^^^^^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:42:5
   |
LL |     sse2();              //~ ERROR call to function with `#[target_feature]` is unsafe
   |     ^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
error[E0133]: call to function with `#[target_feature]` is unsafe and requires unsafe block
  --> /checkout/src/test/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs:45:18
   |
LL | const name: () = sse2(); //~ ERROR call to function with `#[target_feature]` is unsafe
   |                  ^^^^^^ call to function with `#[target_feature]`
   = note: can only be called if the required target features are available

error: aborting due to 10 previous errors

---
- error[E0133]: use of mutable static is unsafe and requires unsafe function or block
+ error[E0133]: use of mutable static is unsafe and requires unsafe block
10   --> $DIR/safe-extern-statics-mut.rs:12:14
11    |
12 LL |     let rb = &B;
14    |
15    = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior
16 
- error[E0133]: use of mutable static is unsafe and requires unsafe function or block
- error[E0133]: use of mutable static is unsafe and requires unsafe function or block
+ error[E0133]: use of mutable static is unsafe and requires unsafe block
18   --> $DIR/safe-extern-statics-mut.rs:13:14
19    |
20 LL |     let xb = XB;
22    |
23    = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior
24 
- error[E0133]: use of mutable static is unsafe and requires unsafe function or block
- error[E0133]: use of mutable static is unsafe and requires unsafe function or block
+ error[E0133]: use of mutable static is unsafe and requires unsafe block
26   --> $DIR/safe-extern-statics-mut.rs:14:15
27    |
28 LL |     let xrb = &XB;

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics-mut/safe-extern-statics-mut.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics-mut/safe-extern-statics-mut.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args safe-extern-statics-mut.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/safe-extern-statics-mut.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics-mut" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics-mut/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---

error[E0133]: use of mutable static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/safe-extern-statics-mut.rs:12:14
   |
LL |     let rb = &B; //~ ERROR use of mutable static is unsafe
   |
   = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior

error[E0133]: use of mutable static is unsafe and requires unsafe block
error[E0133]: use of mutable static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/safe-extern-statics-mut.rs:13:14
   |
LL |     let xb = XB; //~ ERROR use of mutable static is unsafe
   |
   = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior

error[E0133]: use of mutable static is unsafe and requires unsafe block
error[E0133]: use of mutable static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/safe-extern-statics-mut.rs:14:15
   |
LL |     let xrb = &XB; //~ ERROR use of mutable static is unsafe
   |
   = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior

error: aborting due to 4 previous errors
---
3    |
4 LL |     let a = A;

6    |
7    = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
- error[E0133]: use of extern static is unsafe and requires unsafe function or block
+ error[E0133]: use of extern static is unsafe and requires unsafe block
10   --> $DIR/safe-extern-statics.rs:12:14
11    |
11    |
12 LL |     let ra = &A;
14    |
14    |
15    = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
- error[E0133]: use of extern static is unsafe and requires unsafe function or block
+ error[E0133]: use of extern static is unsafe and requires unsafe block
18   --> $DIR/safe-extern-statics.rs:13:14
19    |
19    |
20 LL |     let xa = XA;
22    |
22    |
23    = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
- error[E0133]: use of extern static is unsafe and requires unsafe function or block
+ error[E0133]: use of extern static is unsafe and requires unsafe block
26   --> $DIR/safe-extern-statics.rs:14:15
27    |
27    |
28 LL |     let xra = &XA;

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics/safe-extern-statics.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics/safe-extern-statics.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args safe-extern-statics.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/safe-extern-statics.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/safe-extern-statics/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/safe-extern-statics.rs:11:13
   |
LL |     let a = A; //~ ERROR use of extern static is unsafe
   |             ^ use of extern static
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/safe-extern-statics.rs:12:14
   |
   |
LL |     let ra = &A; //~ ERROR use of extern static is unsafe
   |
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/safe-extern-statics.rs:13:14
   |
   |
LL |     let xa = XA; //~ ERROR use of extern static is unsafe
   |
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error[E0133]: use of extern static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/safe-extern-statics.rs:14:15
   |
   |
LL |     let xra = &XA; //~ ERROR use of extern static is unsafe
   |
   |
   = note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0133`.

---
20 LL |     let _b = a;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/static/static-mut-foreign-requires-unsafe/static-mut-foreign-requires-unsafe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args static/static-mut-foreign-requires-unsafe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/static/static-mut-foreign-requires-unsafe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/static/static-mut-foreign-requires-unsafe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/static/static-mut-foreign-requires-unsafe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---

error[E0133]: use of mutable static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/static/static-mut-foreign-requires-unsafe.rs:8:14
   |
LL |     let _b = a; //~ ERROR: requires unsafe
   |              ^ use of mutable static
   = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior

error: aborting due to 3 previous errors

---
20 LL |     let _b = a;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/static/static-mut-requires-unsafe/static-mut-requires-unsafe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args static/static-mut-requires-unsafe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/static/static-mut-requires-unsafe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/static/static-mut-requires-unsafe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/static/static-mut-requires-unsafe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---

error[E0133]: use of mutable static is unsafe and requires unsafe block
  --> /checkout/src/test/ui/static/static-mut-requires-unsafe.rs:6:14
   |
LL |     let _b = a;     //~ ERROR: requires unsafe
   |              ^ use of mutable static
   = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior

error: aborting due to 3 previous errors

---
4 LL |         *self += 1;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/traits/trait-safety-fn-body/trait-safety-fn-body.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args traits/trait-safety-fn-body.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/traits/trait-safety-fn-body.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/traits/trait-safety-fn-body" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/traits/trait-safety-fn-body/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/traits/trait-safety-fn-body.rs:11:9
   |
LL |         *self += 1;
   |         ^^^^^^^^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.


------------------------------------------


---- [ui] ui/union/union-unsafe.rs stdout ----
diff of stderr:

- error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe function or block
+ error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe block
3    |
3    |
4 LL |     u3.a = ManuallyDrop::new(T::default());
6    |
7    = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized
8 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
10   --> $DIR/union-unsafe.rs:23:6
11    |
12 LL |     *u3.a = T::default();
14    |
15    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
16 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
18   --> $DIR/union-unsafe.rs:29:6
19    |
20 LL |     *u3.a = T::default();
22    |
23    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
24 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
---
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
34   --> $DIR/union-unsafe.rs:40:14
35    |
36 LL |     let U1 { a } = u1;
38    |
39    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
40 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
42   --> $DIR/union-unsafe.rs:41:20
43    |
44 LL |     if let U1 { a: 12 } = u1 {}
46    |
47    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
48 
48 
- error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe function or block
+ error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe block
51    |
51    |
52 LL |     u2.a = ManuallyDrop::new(String::from("new"));
54    |
55    = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized
56 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
58   --> $DIR/union-unsafe.rs:46:6
59    |
60 LL |     *u2.a = String::from("new");
62    |
63    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
64 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
66   --> $DIR/union-unsafe.rs:50:6
67    |
68 LL |     *u3.a = 1;
70    |
71    = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior
72 
72 
- error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe function or block
+ error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe block
75    |
75    |
76 LL |     u3.a = ManuallyDrop::new(String::from("new"));
78    |
79    = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized
80 
- error[E0133]: access to union field is unsafe and requires unsafe function or block
- error[E0133]: access to union field is unsafe and requires unsafe function or block
+ error[E0133]: access to union field is unsafe and requires unsafe block
82   --> $DIR/union-unsafe.rs:54:6
83    |
84 LL |     *u3.a = String::from("new");

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/union/union-unsafe/union-unsafe.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/union/union-unsafe/union-unsafe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args union/union-unsafe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/union/union-unsafe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/union/union-unsafe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/union/union-unsafe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe block
   |
   |
LL |     u3.a = ManuallyDrop::new(T::default()); //~ ERROR assignment to non-`Copy` union field is unsafe
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to non-`Copy` union field
   = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:23:6
  --> /checkout/src/test/ui/union/union-unsafe.rs:23:6
   |
LL |     *u3.a = T::default(); //~ ERROR access to union field is unsafe
   |      ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:29:6
  --> /checkout/src/test/ui/union/union-unsafe.rs:29:6
   |
LL |     *u3.a = T::default(); //~ ERROR access to union field is unsafe
   |      ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:37:13
  --> /checkout/src/test/ui/union/union-unsafe.rs:37:13
   |
LL |     let a = u1.a; //~ ERROR access to union field is unsafe
   |             ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:40:14
  --> /checkout/src/test/ui/union/union-unsafe.rs:40:14
   |
LL |     let U1 { a } = u1; //~ ERROR access to union field is unsafe
   |              ^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:41:20
  --> /checkout/src/test/ui/union/union-unsafe.rs:41:20
   |
LL |     if let U1 { a: 12 } = u1 {} //~ ERROR access to union field is unsafe
   |                    ^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior


error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe block
   |
   |
LL |     u2.a = ManuallyDrop::new(String::from("new")); //~ ERROR assignment to non-`Copy` union
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to non-`Copy` union field
   = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:46:6
  --> /checkout/src/test/ui/union/union-unsafe.rs:46:6
   |
LL |     *u2.a = String::from("new"); //~ ERROR access to union field is unsafe
   |      ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:50:6
  --> /checkout/src/test/ui/union/union-unsafe.rs:50:6
   |
LL |     *u3.a = 1; //~ ERROR access to union field is unsafe
   |      ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior


error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe block
   |
   |
LL |     u3.a = ManuallyDrop::new(String::from("new")); //~ ERROR assignment to non-`Copy` union
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to non-`Copy` union field
   = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized

error[E0133]: access to union field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/union/union-unsafe.rs:54:6
  --> /checkout/src/test/ui/union/union-unsafe.rs:54:6
   |
LL |     *u3.a = String::from("new"); //~ ERROR access to union field is unsafe
   |      ^^^^ access to union field
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error: aborting due to 11 previous errors

---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints/ranged_ints.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints2/ranged_ints2.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints2.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints2.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints2" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints2/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: mutation of layout constrained field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/ranged_ints2.rs:8:13
   |
LL |     let y = &mut x.0; //~ ERROR mutation of layout constrained field is unsafe
   |             ^^^^^^^^ mutation of layout constrained field
   = note: mutating layout constrained fields cannot statically be checked for valid values

error: aborting due to previous error

---

---- [ui] ui/unsafe/ranged_ints2_const.rs stdout ----
diff of stderr:

16    = note: see issue #57563 <***/issues/57563> for more information
17    = help: add `#![feature(const_fn)]` to the crate attributes to enable
- error[E0133]: mutation of layout constrained field is unsafe and requires unsafe function or block
+ error[E0133]: mutation of layout constrained field is unsafe and requires unsafe block
20   --> $DIR/ranged_ints2_const.rs:11:13
21    |
21    |
22 LL |     let y = &mut x.0;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints2_const/ranged_ints2_const.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints2_const.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints2_const.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints2_const" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints2_const/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0723]: mutable references in const fn are unstable
  --> /checkout/src/test/ui/unsafe/ranged_ints2_const.rs:11:9
   |
LL |     let y = &mut x.0; //~ ERROR references in const fn are unstable
   |
   |
   = note: see issue #57563 <***/issues/57563> for more information
   = help: add `#![feature(const_fn)]` to the crate attributes to enable
error[E0723]: mutable references in const fn are unstable
  --> /checkout/src/test/ui/unsafe/ranged_ints2_const.rs:18:9
   |
   |
LL |     let y = unsafe { &mut x.0 }; //~ ERROR mutable references in const fn are unstable
   |
   |
   = note: see issue #57563 <***/issues/57563> for more information
   = help: add `#![feature(const_fn)]` to the crate attributes to enable
error[E0133]: mutation of layout constrained field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/ranged_ints2_const.rs:11:13
   |
   |
LL |     let y = &mut x.0; //~ ERROR references in const fn are unstable
   |             ^^^^^^^^ mutation of layout constrained field
   = note: mutating layout constrained fields cannot statically be checked for valid values

error: aborting due to 3 previous errors

---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints3/ranged_ints3.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints3.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints3.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints3" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints3/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: borrow of layout constrained field with interior mutability is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/ranged_ints3.rs:10:13
   |
LL |     let y = &x.0; //~ ERROR borrow of layout constrained field with interior mutability
   |             ^^^^ borrow of layout constrained field with interior mutability
   = note: references to fields of layout constrained fields lose the constraints. Coupled with interior mutability, the field can be changed to invalid values

error: aborting due to previous error

---

---- [ui] ui/unsafe/ranged_ints3_const.rs stdout ----
diff of stderr:

10 LL |     let y = unsafe { &x.0 };
12 
- error[E0133]: borrow of layout constrained field with interior mutability is unsafe and requires unsafe function or block
+ error[E0133]: borrow of layout constrained field with interior mutability is unsafe and requires unsafe block
14   --> $DIR/ranged_ints3_const.rs:12:13
14   --> $DIR/ranged_ints3_const.rs:12:13
15    |
16 LL |     let y = &x.0;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints3_const/ranged_ints3_const.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints3_const.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints3_const.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints3_const" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints3_const/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0492]: cannot borrow a constant which may contain interior mutability, create a static instead
  --> /checkout/src/test/ui/unsafe/ranged_ints3_const.rs:12:13
   |
LL |     let y = &x.0; //~ ERROR cannot borrow a constant which may contain interior mutability

error[E0492]: cannot borrow a constant which may contain interior mutability, create a static instead
  --> /checkout/src/test/ui/unsafe/ranged_ints3_const.rs:19:22
   |
   |
LL |     let y = unsafe { &x.0 }; //~ ERROR cannot borrow a constant which may contain interior mut

error[E0133]: borrow of layout constrained field with interior mutability is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/ranged_ints3_const.rs:12:13
   |
   |
LL |     let y = &x.0; //~ ERROR cannot borrow a constant which may contain interior mutability
   |             ^^^^ borrow of layout constrained field with interior mutability
   = note: references to fields of layout constrained fields lose the constraints. Coupled with interior mutability, the field can be changed to invalid values

error: aborting due to 3 previous errors

---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints4/ranged_ints4.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints4.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints4.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints4" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints4/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: mutation of layout constrained field is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/ranged_ints4.rs:8:5
   |
LL |     x.0 = 0; //~ ERROR mutation of layout constrained field is unsafe
   |     ^^^^^^^ mutation of layout constrained field
   = note: mutating layout constrained fields cannot statically be checked for valid values

error: aborting due to previous error

---
4 LL |     x.0 = 0;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints4_const/ranged_ints4_const.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints4_const.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints4_const.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints4_const" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints4_const/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---
- error[E0133]: initializing type with `rustc_layout_scalar_valid_range` attr is unsafe and requires unsafe function or block
+ error[E0133]: initializing type with `rustc_layout_scalar_valid_range` attr is unsafe and requires unsafe block
2   --> $DIR/ranged_ints_const.rs:8:34
3    |
4 LL | const fn foo() -> NonZero<u32> { NonZero(0) }

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints_const/ranged_ints_const.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints_const/ranged_ints_const.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/ranged_ints_const.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/ranged_ints_const.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints_const" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/ranged_ints_const/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: initializing type with `rustc_layout_scalar_valid_range` attr is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/ranged_ints_const.rs:8:34
   |
LL | const fn foo() -> NonZero<u32> { NonZero(0) }
   |                                  ^^^^^^^^^^ initializing type with `rustc_layout_scalar_valid_range` attr
   = note: initializing a layout restricted type's field with a value outside the valid range is undefined behavior

error: aborting due to previous error

---
4 LL |     *p = 0;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-assign-deref-ptr/unsafe-fn-assign-deref-ptr.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/unsafe-fn-assign-deref-ptr.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/unsafe-fn-assign-deref-ptr.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-assign-deref-ptr" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-assign-deref-ptr/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/unsafe-fn-assign-deref-ptr.rs:6:5
   |
LL |     *p = 0; //~ ERROR dereference of raw pointer is unsafe
   |     ^^^^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
- error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ error[E0133]: call to unsafe function is unsafe and requires unsafe block
2   --> $DIR/unsafe-const-fn.rs:7:18
3    |
4 LL | const VAL: u32 = dummy(0xFFFF);

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-const-fn/unsafe-const-fn.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-const-fn/unsafe-const-fn.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/unsafe-const-fn.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/unsafe-const-fn.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-const-fn" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-const-fn/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: call to unsafe function is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/unsafe-const-fn.rs:7:18
   |
LL | const VAL: u32 = dummy(0xFFFF);
   |                  ^^^^^^^^^^^^^ call to unsafe function
   = note: consult the function's documentation for information on how to avoid undefined behavior

error: aborting due to previous error

---


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-called-from-safe/unsafe-fn-called-from-safe.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/unsafe-fn-called-from-safe.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/unsafe-fn-called-from-safe.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-called-from-safe" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-called-from-safe/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---
4 LL |     return *p;


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-deref-ptr/unsafe-fn-deref-ptr.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/unsafe-fn-deref-ptr.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/unsafe-fn-deref-ptr.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-deref-ptr" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-deref-ptr/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/unsafe-fn-deref-ptr.rs:2:12
   |
LL |     return *p; //~ ERROR dereference of raw pointer is unsafe
   |            ^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
4 LL |     x();


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-used-as-value/unsafe-fn-used-as-value.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/unsafe-fn-used-as-value.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/unsafe-fn-used-as-value.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-used-as-value" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-fn-used-as-value/auxiliary"
------------------------------------------

------------------------------------------
stderr:
---
- error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
+ error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
2   --> $DIR/unsafe-move-val-init.rs:8:5
3    |
4 LL |     intrinsics::move_val_init(1 as *mut u32, 1);

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-move-val-init/unsafe-move-val-init.stderr
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-move-val-init/unsafe-move-val-init.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args unsafe/unsafe-move-val-init.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/unsafe/unsafe-move-val-init.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-move-val-init" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/unsafe/unsafe-move-val-init/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0133]: dereference of raw pointer is unsafe and requires unsafe block
  --> /checkout/src/test/ui/unsafe/unsafe-move-val-init.rs:8:5
   |
LL |     intrinsics::move_val_init(1 as *mut u32, 1);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.

---
    [ui] ui/issues/issue-45087-unreachable-unsafe.rs
    [ui] ui/issues/issue-45729-unsafe-in-generator.rs
    [ui] ui/issues/issue-47412.rs
    [ui] ui/issues/issue-5844.rs
    [ui] ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs
    [ui] ui/safe-extern-statics.rs
    [ui] ui/static/static-mut-foreign-requires-unsafe.rs
    [ui] ui/static/static-mut-requires-unsafe.rs
    [ui] ui/traits/trait-safety-fn-body.rs
---
test result: FAILED. 10064 passed; 41 failed; 61 ignored; 0 measured; 0 filtered out



command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/compiletest" "--compile-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib" "--run-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib/rustlib/x86_64-unknown-linux-gnu/lib" "--rustc-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "--src-base" "/checkout/src/test/ui" "--build-base" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui" "--stage-id" "stage2-x86_64-unknown-linux-gnu" "--mode" "ui" "--target" "x86_64-unknown-linux-gnu" "--host" "x86_64-unknown-linux-gnu" "--llvm-filecheck" "/usr/lib/llvm-8/bin/FileCheck" "--nodejs" "/usr/bin/node" "--host-rustcflags" "-Crpath -O -Cdebuginfo=0 -Zunstable-options  -Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--target-rustcflags" "-Crpath -O -Cdebuginfo=0 -Zunstable-options  -Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--docck-python" "/usr/bin/python2.7" "--lldb-python" "/usr/bin/python2.7" "--gdb" "/usr/bin/gdb" "--quiet" "--llvm-version" "8.0.0" "--system-llvm" "--cc" "" "--cxx" "" "--cflags" "" "--llvm-components" "" "--adb-path" "adb" "--adb-test-dir" "/data/tmp/work" "--android-cross-path" "" "--color" "always"


failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test --exclude src/tools/tidy
Build completed unsuccessfully in 1:05:59
Build completed unsuccessfully in 1:05:59
== clock drift check ==
  local time: Wed May 13 23:01:54 UTC 2020
  network time: Wed, 13 May 2020 23:01:54 GMT
== end clock drift check ==

##[error]Bash exited with code '1'.
##[section]Finishing: Run build
##[section]Starting: Checkout rust-lang/rust@refs/pull/71862/merge to s
Task         : Get sources
Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.
Version      : 1.0.0
Author       : Microsoft
Author       : Microsoft
Help         : [More Information](https://go.microsoft.com/fwlink/?LinkId=798199)
==============================================================================
Cleaning any cached credential from repository: rust-lang/rust (GitHub)
##[section]Finishing: Checkout rust-lang/rust@refs/pull/71862/merge to s
Cleaning up task key
Start cleaning up orphan processes.
Terminate orphan process: pid (3763) (python)
##[section]Finishing: Finalize Job

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @rust-lang/infra. (Feature Requests)

LeSeulArtichaut · 2020-05-14T08:22:40Z

@RalfJung Sorry if I've been inactive lately... I pushed a commit which should address your review. Could you confirm that the test for the RFC looks good now?
As for the feature gate, I wanted to gate any use of the lint, but I hit an issue where the error is emitted 3 times instead of 1. I'll try to investigate that later...

RalfJung · 2020-05-14T16:37:53Z

@LeSeulArtichaut it's okay, we are not in a rush. :)

The tests look much better now, thanks! Could you also test some other unsafe operations besides calling an unsafe function... let's say, dereferencing a raw pointer. Also taking a reference to a packed field is notorious (#27060), it is a warning instead of a hard error, so we should probably test that that interacts properly with the new lint.

LeSeulArtichaut · 2020-05-14T19:12:08Z

@RalfJung I pushed 15ec7fd5ff3c5ec92f1155bad202ee00f80e111b, which includes dereferencing a raw pointer, using a static mut and borrowing a packed field. Should I add other stuff, e.g. using a union or doing inline assembly?

src/test/ui/unsafe/rfc-2585-unsafe_op_in_unsafe_fn.rs

LeSeulArtichaut · 2020-05-27T22:46:49Z

Pushed a commit to fix rustdoc failures, and this time I tested it :D
Hopefully CI passes now.

LeSeulArtichaut · 2020-05-28T14:52:47Z

@nikomatsakis CI passes now 🎉

In the meantime, I opened #72694 for the feature-gated lints. I developed my implementation plan there and I think I could do it pretty easily. But at the same time I think it might be a good first issue for a new contributor, which I can probably "mentor" (rather guide them in the documentation 😄). Please tell me if the implementation plan seems good and whether I should do it or let someone else do it.

src/librustdoc/core.rs

nikomatsakis · 2020-05-28T17:23:54Z

@bors r+

Thanks for seeing this through, @LeSeulArtichaut! I'll check out #72694

bors · 2020-05-28T17:23:55Z

📌 Commit 0e3b31c has been approved by nikomatsakis

@RalfJung

…afe-fn, r=nikomatsakis Implement RFC 2585: unsafe blocks in unsafe fn Tracking issue: rust-lang#71668 r? @RalfJung cc @nikomatsakis

@RalfJung

…afe-fn, r=nikomatsakis Implement RFC 2585: unsafe blocks in unsafe fn Tracking issue: rust-lang#71668 r? @RalfJung cc @nikomatsakis

@RalfJung

…afe-fn, r=nikomatsakis Implement RFC 2585: unsafe blocks in unsafe fn Tracking issue: rust-lang#71668 r? @RalfJung cc @nikomatsakis

@RalfJung

…afe-fn, r=nikomatsakis Implement RFC 2585: unsafe blocks in unsafe fn Tracking issue: rust-lang#71668 r? @RalfJung cc @nikomatsakis

@ghost

Rollup of 9 pull requests Successful merges: - rust-lang#67460 (Tweak impl signature mismatch errors involving `RegionKind::ReVar` lifetimes) - rust-lang#71095 (impl From<[T; N]> for Box<[T]>) - rust-lang#71500 (Make pointer offset methods/intrinsics const) - rust-lang#71804 (linker: Support `-static-pie` and `-static -shared`) - rust-lang#71862 (Implement RFC 2585: unsafe blocks in unsafe fn) - rust-lang#72103 (borrowck `DefId` -> `LocalDefId`) - rust-lang#72407 (Various minor improvements to Ipv6Addr::Display) - rust-lang#72413 (impl Step for char (make Range*<char> iterable)) - rust-lang#72439 (NVPTX support for new asm!) Failed merges: r? @ghost

@Mark-Simulacrum

…nikomatsakis `#[deny(unsafe_op_in_unsafe_fn)]` in liballoc This PR proposes to make use of the new `unsafe_op_in_unsafe_fn` lint, i.e. no longer consider the body of an unsafe function as an unsafe block and require explicit unsafe block to perform unsafe operations. This has been first (partly) suggested by @Mark-Simulacrum in rust-lang#69245 (comment) Tracking issue for the feature: rust-lang#71668. ~~Blocked on rust-lang#71862.~~ r? @Mark-Simulacrum cc @nikomatsakis can you confirm that those changes are desirable? Should I restrict it to only BTree for the moment?

rust-highfive assigned RalfJung May 3, 2020

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label May 3, 2020

rust-highfive assigned nikomatsakis and unassigned RalfJung May 3, 2020