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Rust 1.23 bus error during stage 2 build on Solaris sparc #47930

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psumbera opened this issue Feb 1, 2018 · 8 comments
Closed

Rust 1.23 bus error during stage 2 build on Solaris sparc #47930

psumbera opened this issue Feb 1, 2018 · 8 comments
Labels
C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. O-SPARC Target: SPARC processors T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue.

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@psumbera
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psumbera commented Feb 1, 2018

While building Rust 1.23 (using 1.22.1) on Solaris sparc it ends like this (on intel it's ok):

...
Copying stage2 rustc from stage1 (sparcv9-sun-solaris -> sparcv9-sun-solaris / sparcv9-sun-solaris)
Building rustdoc for stage2 (sparcv9-sun-solaris)
   Compiling void v1.0.2
   Compiling bitflags v0.9.1
   Compiling cc v1.0.3
   Compiling fnv v1.0.6
error: Could not compile `void`.
warning: build failed, waiting for other jobs to finish...
error: Could not compile `bitflags`.
warning: build failed, waiting for other jobs to finish...
error: Could not compile `fnv`.
warning: build failed, waiting for other jobs to finish...
error: Could not compile `cc`.
...

There are four core dumps from this:


Feb  1 12:20:53 s11-u3-ul-cbe genunix: [ID 603404 kern.notice] NOTICE: core_log: rustc[6944] core dumped: /var/cores/core.rustc.157622.1517487635
Feb  1 12:20:57 s11-u3-ul-cbe genunix: [ID 603404 kern.notice] NOTICE: core_log: rustc[6940] core dumped: /var/cores/core.rustc.157622.1517487640
Feb  1 12:21:03 s11-u3-ul-cbe genunix: [ID 603404 kern.notice] NOTICE: core_log: rustc[6938] core dumped: /var/cores/core.rustc.157622.1517487646
Feb  1 12:21:03 s11-u3-ul-cbe genunix: [ID 603404 kern.notice] NOTICE: core_log: rustc[6942] core dumped: /var/cores/core.rustc.157622.1517487649

All cores look very similar:

0007ff0d6d7f3600 librustc_trans-addd6d21065150e2.so`_$LT$std..sync..mpsc..Sender$LT$T$GT$$GT$::send::h815a2ce69c64504c+0x18(0, 10007ff0d7888fb, 780007ff0d6d7f41, d000000016264f79,
800007ff0d6d7f41, 2800000000000000)

rustc command line which cores dump is:

s11-u3-ul-cbe 13:22 /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9: RUSTBUILD_NATIVE_DIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/native RUSTC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc RUSTC_REAL=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc RUSTC_STAGE=2 RUSTC_DEBUG_ASSERTIONS=false RUSTC_SYSROOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2 RUSTC_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib RUSTC_RPATH=true RUSTDOC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustdoc RUSTDOC_REAL=/path/to/nowhere/rustdoc/not/required /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name bitflags /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/bitflags-0.7.0/src/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 -C metadata=484c479121fee6f9 -C extra-filename=-484c479121fee6f9 --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps --target sparcv9-sun-solaris -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow --verbose
Segmentation Fault (core dumped)
@psumbera
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psumbera commented Feb 1, 2018

When I build on the same system older Rust 1.22.1 (using the same Rust 1.22.1) it goes fine.

@sfackler sfackler added I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. O-SPARC Target: SPARC processors labels Feb 1, 2018
@gsollazzo gsollazzo added T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue. labels Feb 1, 2018
@psumbera
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psumbera commented Feb 9, 2018

Following is cargo command output with --verbose flag:

CARGO_HOME=/scratch/userland-rust-s11.3/components/rust/rustc/build/.cargo CARGO_TARGET_DIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools __CARGO_DEFAULT_LIB_METADATA=dev RUSTBUILD_NATIVE_DIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/native RUSTC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc RUSTC_REAL=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc RUSTC_STAGE=2 RUSTC_DEBUG_ASSERTIONS=false RUSTC_SYSROOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2 RUSTC_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib RUSTC_RPATH=true RUSTDOC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustdoc RUSTDOC_REAL=/path/to/nowhere/rustdoc/not/required TEST_MIRI=false RUSTC_BOOTSTRAP=1 RUST_TEST_THREADS=4 RUSTC_SNAPSHOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc RUSTC_SNAPSHOT_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib RUSTC_VERBOSE=0 CC=gcc  CFLAGS="-ffunction-sections -fdata-sections -fPIC"  AR=ar  RANLIB=ar  CXX=g++ RUSTDOC_CRATE_VERSION=1.23.0-dev CFG_COMPILER_HOST_TRIPLE=sparcv9-sun-solaris CFG_RELEASE_CHANNEL=dev RUSTC_THINLTO=1 RUSTC_NO_PREFER_DYNAMIC=1 LZMA_API_STATIC=1 CFG_VERSION=1.23.0-dev RUSTC_DEBUGINFO=false RUSTC_DEBUGINFO_LINES=false /usr/bin/cargo build --target sparcv9-sun-solaris --release --manifest-path /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src/src/tools/rustdoc/Cargo.toml --verbose
s11-u3-ul-cbe 10:51 /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9: CARGO_HOME=/scratch/userland-rust-s11.3/components/rust/rustc/build/.cargo CARGO_TARGET_DIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools __CARGO_DEFAULT_LIB_METADATA=dev RUSTBUILD_NATIVE_DIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/native RUSTC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc RUSTC_REAL=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc RUSTC_STAGE=2 RUSTC_DEBUG_ASSERTIONS=false RUSTC_SYSROOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2 RUSTC_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib RUSTC_RPATH=true RUSTDOC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustdoc RUSTDOC_REAL=/path/to/nowhere/rustdoc/not/required TEST_MIRI=false RUSTC_BOOTSTRAP=1 RUST_TEST_THREADS=4 RUSTC_SNAPSHOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc RUSTC_SNAPSHOT_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib RUSTC_VERBOSE=0 CC=gcc  CFLAGS="-ffunction-sections -fdata-sections -fPIC"  AR=ar  RANLIB=ar  CXX=g++ RUSTDOC_CRATE_VERSION=1.23.0-dev CFG_COMPILER_HOST_TRIPLE=sparcv9-sun-solaris CFG_RELEASE_CHANNEL=dev RUSTC_THINLTO=1 RUSTC_NO_PREFER_DYNAMIC=1 LZMA_API_STATIC=1 CFG_VERSION=1.23.0-dev RUSTC_DEBUGINFO=false RUSTC_DEBUGINFO_LINES=false /usr/bin/cargo build --target sparcv9-sun-solaris --release --manifest-path /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src/src/tools/rustdoc/Cargo.toml --verbose
   Compiling lazy_static v0.2.11
   Compiling fnv v1.0.6
   Compiling mac v0.1.1
   Compiling unicode-xid v0.0.4
     Running `/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name lazy_static /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/lazy_static/src/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 -C metadata=3f8fdf18b00fa5f5 -C extra-filename=-3f8fdf18b00fa5f5 --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps --target sparcv9-sun-solaris -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow`
     Running `/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name fnv /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/fnv/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 -C metadata=a91570d0287a572e -C extra-filename=-a91570d0287a572e --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps --target sparcv9-sun-solaris -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow`
	 error: Could not compile `unicode-xid`.

Caused by:
  process didn't exit successfully: `/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name unicode_xid /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/unicode-xid/src/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 --cfg feature="default" -C metadata=fccd58133e25a71b -C extra-filename=-fccd58133e25a71b --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow` (signal: 11, SIGSEGV: invalid memory reference)
warning: build failed, waiting for other jobs to finish...
error: Could not compile `mac`.

Caused by:
  process didn't exit successfully: `/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name mac /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/mac/src/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 -C metadata=720d5316be52fc06 -C extra-filename=-720d5316be52fc06 --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps --target sparcv9-sun-solaris -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow` (signal: 11, SIGSEGV: invalid memory reference)
warning: build failed, waiting for other jobs to finish...
error: Could not compile `fnv`.

Caused by:
  process didn't exit successfully: `/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name fnv /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/fnv/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 -C metadata=a91570d0287a572e -C extra-filename=-a91570d0287a572e --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps --target sparcv9-sun-solaris -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow` (signal: 11, SIGSEGV: invalid memory reference)
warning: build failed, waiting for other jobs to finish...
error: Could not compile `lazy_static`.

Caused by:
  process didn't exit successfully: `/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name lazy_static /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/lazy_static/src/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 -C metadata=3f8fdf18b00fa5f5 -C extra-filename=-3f8fdf18b00fa5f5 --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps --target sparcv9-sun-solaris -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps -L dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow` (signal: 11, SIGSEGV: invalid memory reference)

And this is individual rustc command which cores dump (I had to remove --cfg feature="default" --cfg feature="example_generated", but don't know why):

$ RUSTBUILD_NATIVE_DIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/native \
RUSTC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc \
RUSTC_REAL=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc \
RUSTC_STAGE=2 RUSTC_DEBUG_ASSERTIONS=false \
RUSTC_SYSROOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2 \
RUSTC_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib \
RUSTC_RPATH=true \
RUSTDOC=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustdoc \
RUSTDOC_REAL=/path/to/nowhere/rustdoc/not/required \
RUSTC_BOOTSTRAP=1 RUST_TEST_THREADS=4 \
RUSTC_SNAPSHOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc \
RUSTC_SNAPSHOT_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib \
RUSTC_VERBOSE=0 \
RUSTDOC_CRATE_VERSION=1.23.0-dev \
CFG_COMPILER_HOST_TRIPLE=sparcv9-sun-solaris \
CFG_RELEASE_CHANNEL=dev RUSTC_THINLTO=1 \
RUSTC_NO_PREFER_DYNAMIC=1 \
CFG_VERSION=1.23.0-dev RUSTC_DEBUGINFO=false \
RUSTC_DEBUGINFO_LINES=false CARGO_PKG_VERSION_PRE= \
/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc --crate-name bitflags /scratch/userland-rust-s11.3/components/rust/rustc/rustc-1.23.0-src-vendored-sources/bitflags-0.9.1/src/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=2 -C metadata=e6ef588569977e18 -C extra-filename=-e6ef588569977e18 --out-dir /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps --target sparcv9-sun-solaris -L  dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/sparcv9-sun-solaris/release/deps  -L  dependency=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2-tools/release/deps --cap-lints allow
Segmentation Fault (core dumped)

Yet the core looks still the same:

t@4 (l@4) terminated by signal SEGV (no mapping at the fault address)
0x001ffd63ba8dc414: h3ddd15065e34e707+0x00d4:   stx      %i3, [%fp + 1871]
(dbx) where
current thread: t@4
=>[1] _$LT$std..sync..mpsc..oneshot..Packet$LT$T$GT$$GT$::send::h3ddd15065e34e707(), at 0x1ffd63ba8dc414

@psumbera
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psumbera commented Feb 9, 2018

Ok. The issue is simply that stage2 compiler is broken:

$ cat mytest.rs
fn main() { println!("Hello World!"); }
$ RUSTC_REAL=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc \
> RUSTC_STAGE=2 \
> RUSTC_SYSROOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2 \
> RUSTC_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib \
> RUSTC_SNAPSHOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/bin/rustc \
> RUSTC_SNAPSHOT_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage2/lib \
> /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc mytest.rs
Segmentation Fault (core dumped)
$ RUSTC_REAL=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage1/bin/rustc \
> RUSTC_STAGE=2 \
> RUSTC_SYSROOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage1 \
> RUSTC_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage1/lib \
> RUSTC_SNAPSHOT=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage1/bin/rustc \
> RUSTC_SNAPSHOT_LIBDIR=/scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/sparcv9-sun-solaris/stage1/lib \
> /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9/build/bootstrap/debug/rustc mytest.rs
s11-u3-ul-cbe 14:18 /scratch/userland-rust-s11.3/components/rust/rustc/build/sparcv9: ./mytest
Hello World!

@glaubitz
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glaubitz commented Feb 11, 2018 •
edited
Loading

The problem seems to be that the patch by @jrtc27 to fix the stack alignment on sparc64 in LLVM was merged into the rust-llvm-release-4-0-1 and rust-llvm-release-6-0-0 branches but not in the master branch which is used by default when building rustc.

The necessary PR is: rust-lang/llvm#94

The patch has already been merged upstream (https://reviews.llvm.org/D39425) and was also backported to the 6.0 branch (https://bugs.llvm.org/show_bug.cgi?id=36188).

So, in order to fix this issue, it should simply be enough to get the patch merged into https://github.com/rust-lang/llvm.

Edit: I also had to downgrade binutils to 2.28 as binutils 2.30 breaks rustc builds on sparc64. And the problem is that I have no clue which branches of compiler-rt`` and llvm rustc``` is actually using.

@glaubitz
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@psumbera Any success with the latest LLVM patches?

@psumbera
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@psumbera Any success with the latest LLVM patches?

LLVM patches help for this issue. Though not sure when they will be included so that I can close this issue.

Note that they help but later rustdoc core dumped. So I have to disable documentation (--disable-docs) to get working rust-1.23 on sparc. rust -1.24 seems to be better (but now there is some linker issue on Solaris 11.3. Solaris 11.4 seems to be fine).

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sanxiyn commented Feb 23, 2019

What's the current status here?

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I believe we can close the issue now.

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C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. O-SPARC Target: SPARC processors T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue.
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