proc_macro crate fails to build with llvm LLVM_ENABLE_EXPENSIVE_CHECKS

[matthiaskrgr]

Soooo I was trying to build rustc with a llvm that has LLVM_ENABLE_EXPENSIVE_CHECKS on for some extra asserts, but it turns out that we can't even build std artifacts like that 😅

To turn on expensive checks

diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 94a61b727a3..d57ecab838f 100644
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -385,6 +385,7 @@ fn run(self, builder: &Builder<'_>) -> PathBuf {
             .define("LLVM_ENABLE_LIBEDIT", "OFF")
             .define("LLVM_ENABLE_BINDINGS", "OFF")
             .define("LLVM_ENABLE_Z3_SOLVER", "OFF")
+            .define("LLVM_ENABLE_EXPENSIVE_CHECKS", "ON")
             .define("LLVM_PARALLEL_COMPILE_JOBS", builder.jobs().to_string())
             .define("LLVM_TARGET_ARCH", target_native.split('-').next().unwrap())
             .define("LLVM_DEFAULT_TARGET_TRIPLE", target_native);

cat config.toml | grep -v "^#" | grep -v "^$"

changelog-seen = 2
[llvm]
download-ci-llvm = false
assertions = true
ccache = "/home/matthias/.cargo/bin/sccache"
ninja = true
targets = "X86"
link-jobs = 2
cflags = "-march=native" # -D_GLIBCXX_DEBUG
cxxflags = "-march=native" # -D_GLIBCXX_DEBUG
ldflags = "-march=native" # -D_GLIBCXX_DEBUG
[build]
extended = true
tools = ["cargo", "rls", "clippy", "rustfmt", "analysis", "src"] # + "rust-demangler" if `profiler`
low-priority = true
[install]
[rust]
debug = true
debug-assertions = true
debug-assertions-std = true
overflow-checks = true
overflow-checks-std = true
debuginfo-level = 1
backtrace-on-ice = true
verify-llvm-ir = true
[target.x86_64-unknown-linux-gnu]
[dist]

Then I built using RUSTFLAGS="" ./x.py build

rustc --version --verbose:

rust repo @ c5842b0be783dffa5a49693541acb79115c7eeef

Backtrace

....

Copy "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/llvm/build/bin/llvm-dis" to "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/bin/llvm-dis"
Copy "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/llvm/build/bin/llc" to "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/bin/llc"
Copy "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/llvm/build/bin/opt" to "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/bin/opt"
  c Sysroot { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu } }
Copy "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/rustc-main" to "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/bin/rustc"
< Assemble { target_compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu } }
> Std { target: x86_64-unknown-linux-gnu, compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu }, crates: [] }
  > StartupObjects { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu }, target: x86_64-unknown-linux-gnu }
  < StartupObjects { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu }, target: x86_64-unknown-linux-gnu }
  c Assemble { target_compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu } }
  c Libdir { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu }, target: x86_64-unknown-linux-gnu }
  c Libdir { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu }, target: x86_64-unknown-linux-gnu }
  c Sysroot { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu } }
  c Sysroot { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu } }
  c Sysroot { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu } }
  c Sysroot { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu } }
Building stage1 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
running: "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "x86_64-unknown-linux-gnu" "-Zcheck-cfg=names,values,output" "-Zbinary-dep-depinfo" "-j" "1" "-v" "-v" "-v" "-v" "-v" "-v" "-v" "--release" "--features" "panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/home/matthias/vcs/github/rust_debug_assertions/library/test/Cargo.toml" "--message-format" "json-render-diagnostics"
       Fresh cc v1.0.73
       Fresh core v0.0.0 (/home/matthias/vcs/github/rust_debug_assertions/library/core)
       Fresh rustc-std-workspace-core v1.99.0 (/home/matthias/vcs/github/rust_debug_assertions/library/rustc-std-workspace-core)
       Fresh compiler_builtins v0.1.82
       Fresh alloc v0.0.0 (/home/matthias/vcs/github/rust_debug_assertions/library/alloc)
       Fresh rustc-std-workspace-alloc v1.99.0 (/home/matthias/vcs/github/rust_debug_assertions/library/rustc-std-workspace-alloc)
       Fresh libc v0.2.135
       Fresh cfg-if v1.0.0
       Fresh unwind v0.0.0 (/home/matthias/vcs/github/rust_debug_assertions/library/unwind)
       Fresh memchr v2.5.0
       Fresh gimli v0.26.1
       Fresh adler v1.0.2
       Fresh miniz_oxide v0.5.3
       Fresh addr2line v0.17.0
       Fresh object v0.29.0
       Fresh panic_unwind v0.0.0 (/home/matthias/vcs/github/rust_debug_assertions/library/panic_unwind)
       Fresh std_detect v0.1.5 (/home/matthias/vcs/github/rust_debug_assertions/library/stdarch/crates/std_detect)
       Fresh panic_abort v0.0.0 (/home/matthias/vcs/github/rust_debug_assertions/library/panic_abort)
       Fresh hashbrown v0.12.3
       Fresh rustc-demangle v0.1.21
       Fresh std v0.0.0 (/home/matthias/vcs/github/rust_debug_assertions/library/std)
       Fresh rustc-std-workspace-std v1.99.0 (/home/matthias/vcs/github/rust_debug_assertions/library/rustc-std-workspace-std)
       Fresh unicode-width v0.1.10
       Fresh getopts v0.2.21
   Compiling proc_macro v0.0.0 (/home/matthias/vcs/github/rust_debug_assertions/library/proc_macro)
     Running `CARGO=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/bin/cargo CARGO_CRATE_NAME=proc_macro CARGO_MANIFEST_DIR=/home/matthias/vcs/github/rust_debug_assertions/library/proc_macro CARGO_PKG_AUTHORS='' CARGO_PKG_DESCRIPTION='' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=proc_macro CARGO_PKG_REPOSITORY='' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.0.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' LD_LIBRARY_PATH='/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/release/deps:/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/lib' /home/matthias/.cargo/bin/sccache /home/matthias/vcs/github/rust_debug_assertions/build/bootstrap/debug/rustc --crate-name proc_macro --edition=2021 library/proc_macro/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no -C debuginfo=1 -C debug-assertions=on -Zunstable-options --check-cfg 'names()' --check-cfg 'values()' -C metadata=de3ffe529f393522 -C extra-filename=-de3ffe529f393522 --out-dir /home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps --target x86_64-unknown-linux-gnu -L dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/release/deps --extern core=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libcore-05d65ceee8b68e1f.rmeta --extern std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.so --extern std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.rlib -Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options '--check-cfg=values(bootstrap)' '--check-cfg=values(stdarch_intel_sde)' '--check-cfg=values(no_fp_fmt_parse)' '--check-cfg=values(no_global_oom_handling)' '--check-cfg=values(no_rc)' '--check-cfg=values(no_sync)' '--check-cfg=values(freebsd12)' '--check-cfg=values(backtrace_in_libstd)' '--check-cfg=values(target_env,"libnx")' '--check-cfg=values(target_os,"watchos")' '--check-cfg=values(target_arch,"asmjs","spirv","nvptx","nvptx64","le32","xtensa")' '--check-cfg=values(dont_compile_me)' '--check-cfg=values(rustix_use_libc)' -Zmacro-backtrace -Clink-args=-Wl,-z,origin '-Clink-args=-Wl,-rpath,$ORIGIN/../lib' -Csplit-debuginfo=off -Zsave-analysis -Cprefer-dynamic -Cembed-bitcode=yes '-Zcrate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/")' -Z binary-dep-depinfo -L native=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/build/compiler_builtins-1dd36b1385d26063/out`
sccache: warning: The server looks like it shut down unexpectedly, compiling locally instead
[RUSTC-SHIM] rustc proc_macro env[0]: "CARGO"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/bin/cargo"
[RUSTC-SHIM] rustc proc_macro env[1]: "CARGO_CRATE_NAME"="proc_macro"
[RUSTC-SHIM] rustc proc_macro env[2]: "CARGO_INCREMENTAL"="0"
[RUSTC-SHIM] rustc proc_macro env[3]: "CARGO_MAKEFLAGS"="-j --jobserver-fds=15,16 --jobserver-auth=15,16"
[RUSTC-SHIM] rustc proc_macro env[4]: "CARGO_MANIFEST_DIR"="/home/matthias/vcs/github/rust_debug_assertions/library/proc_macro"
[RUSTC-SHIM] rustc proc_macro env[5]: "CARGO_PKG_AUTHORS"=""
[RUSTC-SHIM] rustc proc_macro env[6]: "CARGO_PKG_DESCRIPTION"=""
[RUSTC-SHIM] rustc proc_macro env[7]: "CARGO_PKG_HOMEPAGE"=""
[RUSTC-SHIM] rustc proc_macro env[8]: "CARGO_PKG_LICENSE"=""
[RUSTC-SHIM] rustc proc_macro env[9]: "CARGO_PKG_LICENSE_FILE"=""
[RUSTC-SHIM] rustc proc_macro env[10]: "CARGO_PKG_NAME"="proc_macro"
[RUSTC-SHIM] rustc proc_macro env[11]: "CARGO_PKG_REPOSITORY"=""
[RUSTC-SHIM] rustc proc_macro env[12]: "CARGO_PKG_RUST_VERSION"=""
[RUSTC-SHIM] rustc proc_macro env[13]: "CARGO_PKG_VERSION"="0.0.0"
[RUSTC-SHIM] rustc proc_macro env[14]: "CARGO_PKG_VERSION_MAJOR"="0"
[RUSTC-SHIM] rustc proc_macro env[15]: "CARGO_PKG_VERSION_MINOR"="0"
[RUSTC-SHIM] rustc proc_macro env[16]: "CARGO_PKG_VERSION_PATCH"="0"
[RUSTC-SHIM] rustc proc_macro env[17]: "CARGO_PKG_VERSION_PRE"=""
[RUSTC-SHIM] rustc proc_macro env[18]: "CARGO_PROFILE_RELEASE_DEBUG"="1"
[RUSTC-SHIM] rustc proc_macro env[19]: "CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS"="true"
[RUSTC-SHIM] rustc proc_macro env[20]: "CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS"="true"
[RUSTC-SHIM] rustc proc_macro env[21]: "CARGO_TARGET_DIR"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std"
[RUSTC-SHIM] rustc proc_macro env[22]: "RUSTBUILD_NATIVE_DIR"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/native"
[RUSTC-SHIM] rustc proc_macro env[23]: "RUSTC"="/home/matthias/vcs/github/rust_debug_assertions/build/bootstrap/debug/rustc"
[RUSTC-SHIM] rustc proc_macro env[24]: "RUSTC_BACKTRACE_ON_ICE"="1"
[RUSTC-SHIM] rustc proc_macro env[25]: "RUSTC_BOOTSTRAP"="1"
[RUSTC-SHIM] rustc proc_macro env[26]: "RUSTC_BREAK_ON_ICE"="1"
[RUSTC-SHIM] rustc proc_macro env[27]: "RUSTC_ERROR_METADATA_DST"="/home/matthias/vcs/github/rust_debug_assertions/build/tmp/extended-error-metadata"
[RUSTC-SHIM] rustc proc_macro env[28]: "RUSTC_FORCE_UNSTABLE"="1"
[RUSTC-SHIM] rustc proc_macro env[29]: "RUSTC_INSTALL_BINDIR"="bin"
[RUSTC-SHIM] rustc proc_macro env[30]: "RUSTC_LIBDIR"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/lib"
[RUSTC-SHIM] rustc proc_macro env[31]: "RUSTC_LINT_FLAGS"="-Wrust_2018_idioms -Wunused_lifetimes -Wsemicolon_in_expressions_from_macros -Dwarnings"
[RUSTC-SHIM] rustc proc_macro env[32]: "RUSTC_REAL"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/bin/rustc"
[RUSTC-SHIM] rustc proc_macro env[33]: "RUSTC_SNAPSHOT"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/bin/rustc"
[RUSTC-SHIM] rustc proc_macro env[34]: "RUSTC_SNAPSHOT_LIBDIR"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/lib"
[RUSTC-SHIM] rustc proc_macro env[35]: "RUSTC_STAGE"="1"
[RUSTC-SHIM] rustc proc_macro env[36]: "RUSTC_SYSROOT"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1"
[RUSTC-SHIM] rustc proc_macro env[37]: "RUSTC_VERBOSE"="7"
[RUSTC-SHIM] rustc proc_macro env[38]: "RUSTC_WRAPPER"="/home/matthias/.cargo/bin/sccache"
[RUSTC-SHIM] rustc proc_macro env[39]: "RUSTDOC"="/home/matthias/vcs/github/rust_debug_assertions/build/bootstrap/debug/rustdoc"
[RUSTC-SHIM] rustc proc_macro env[40]: "RUSTDOCFLAGS"="-Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options --check-cfg=values(bootstrap) --check-cfg=values(stdarch_intel_sde) --check-cfg=values(no_fp_fmt_parse) --check-cfg=values(no_global_oom_handling) --check-cfg=values(no_rc) --check-cfg=values(no_sync) --check-cfg=values(freebsd12) --check-cfg=values(backtrace_in_libstd) --check-cfg=values(target_env,\"libnx\") --check-cfg=values(target_os,\"watchos\") --check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"nvptx64\",\"le32\",\"xtensa\") --check-cfg=values(dont_compile_me) --check-cfg=values(rustix_use_libc) -Dwarnings -Wrustdoc::invalid_codeblock_attributes --crate-version 1.67.0-dev -Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\")"
[RUSTC-SHIM] rustc proc_macro env[41]: "RUSTDOC_REAL"="/path/to/nowhere/rustdoc/not/required"
[RUSTC-SHIM] rustc proc_macro env[42]: "RUSTFLAGS"="-Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options --check-cfg=values(bootstrap) --check-cfg=values(stdarch_intel_sde) --check-cfg=values(no_fp_fmt_parse) --check-cfg=values(no_global_oom_handling) --check-cfg=values(no_rc) --check-cfg=values(no_sync) --check-cfg=values(freebsd12) --check-cfg=values(backtrace_in_libstd) --check-cfg=values(target_env,\"libnx\") --check-cfg=values(target_os,\"watchos\") --check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"nvptx64\",\"le32\",\"xtensa\") --check-cfg=values(dont_compile_me) --check-cfg=values(rustix_use_libc) -Zmacro-backtrace -Clink-args=-Wl,-z,origin -Clink-args=-Wl,-rpath,$ORIGIN/../lib -Csplit-debuginfo=off -Zsave-analysis -Cprefer-dynamic -Cembed-bitcode=yes -Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\")"
[RUSTC-SHIM] rustc proc_macro env[43]: "RUST_COMPILER_RT_ROOT"="/home/matthias/vcs/github/rust_debug_assertions/src/llvm-project/compiler-rt"
[RUSTC-SHIM] rustc proc_macro env[44]: "RUST_SAVE_ANALYSIS_CONFIG"="{\"output_file\": null,\"full_docs\": false,\"pub_only\": true,\"reachable_only\": false,\"distro_crate\": true,\"signatures\": false,\"borrow_data\": false}"
[RUSTC-SHIM] rustc proc_macro env[45]: "RUST_TEST_THREADS"="1"
[RUSTC-SHIM] rustc proc_macro working directory: /home/matthias/vcs/github/rust_debug_assertions
[RUSTC-SHIM] rustc proc_macro command: "LD_LIBRARY_PATH"="/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/lib:/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/release/deps:/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/lib" "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "--crate-name" "proc_macro" "--edition=2021" "library/proc_macro/src/lib.rs" "--error-format=json" "--json=diagnostic-rendered-ansi,artifacts,future-incompat" "--crate-type" "lib" "--emit=dep-info,metadata,link" "-C" "opt-level=3" "-C" "embed-bitcode=no" "-C" "debuginfo=1" "-C" "debug-assertions=on" "-Zunstable-options" "--check-cfg" "names()" "--check-cfg" "values()" "-C" "metadata=de3ffe529f393522" "-C" "extra-filename=-de3ffe529f393522" "--out-dir" "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps" "--target" "x86_64-unknown-linux-gnu" "-L" "dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps" "-L" "dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/release/deps" "--extern" "core=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libcore-05d65ceee8b68e1f.rmeta" "--extern" "std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.so" "--extern" "std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.rlib" "-Csymbol-mangling-version=legacy" "-Zunstable-options" "-Zunstable-options" "--check-cfg=values(bootstrap)" "--check-cfg=values(stdarch_intel_sde)" "--check-cfg=values(no_fp_fmt_parse)" "--check-cfg=values(no_global_oom_handling)" "--check-cfg=values(no_rc)" "--check-cfg=values(no_sync)" "--check-cfg=values(freebsd12)" "--check-cfg=values(backtrace_in_libstd)" "--check-cfg=values(target_env,\"libnx\")" "--check-cfg=values(target_os,\"watchos\")" "--check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"nvptx64\",\"le32\",\"xtensa\")" "--check-cfg=values(dont_compile_me)" "--check-cfg=values(rustix_use_libc)" "-Zmacro-backtrace" "-Clink-args=-Wl,-z,origin" "-Clink-args=-Wl,-rpath,$ORIGIN/../lib" "-Csplit-debuginfo=off" "-Zsave-analysis" "-Cprefer-dynamic" "-Cembed-bitcode=yes" "-Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\")" "-Z" "binary-dep-depinfo" "-L" "native=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/build/compiler_builtins-1dd36b1385d26063/out" "-Wrust_2018_idioms" "-Wunused_lifetimes" "-Wsemicolon_in_expressions_from_macros" "-Dwarnings" "--sysroot" "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1" "-Z" "force-unstable-if-unmarked"
[RUSTC-SHIM] rustc proc_macro sysroot: "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1"
[RUSTC-SHIM] rustc proc_macro libdir: "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/lib"

# After Instruction Selection
# Machine code for function _ZN10proc_macro6bridge6server22RunningSameThreadGuard3new17hd07da82ffb49fc2aE: IsSSA, TracksLiveness
Frame Objects:
  fi#0: size=48, align=8, at location [SP+8]

bb.0 (%ir-block.0):
  successors: %bb.1(0x30000000), %bb.2(0x50000000); %bb.1(37.50%), %bb.2(62.50%)

  ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !709; library/core/src/option.rs:630:15 @[ library/std/src/thread/local.rs:802:22 @[ library/std/src/thread/local.rs:969:23 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ] ] ]
  TLS_addr64 $noreg, 1, $noreg, target-flags(x86-tlsgd) @_ZN10proc_macro6bridge6server27ALREADY_RUNNING_SAME_THREAD7__getit5__KEY17hadc6be6d27cb5446E, $noreg, implicit-def $rax, implicit-def dead $rcx, implicit-def dead $rdx, implicit-def dead $rsi, implicit-def dead $rdi, implicit-def dead $r8, implicit-def dead $r9, implicit-def dead $r10, implicit-def dead $r11, implicit-def dead $fp0, implicit-def dead $fp1, implicit-def dead $fp2, implicit-def dead $fp3, implicit-def dead $fp4, implicit-def dead $fp5, implicit-def dead $fp6, implicit-def dead $fp7, implicit-def dead $st0, implicit-def dead $st1, implicit-def dead $st2, implicit-def dead $st3, implicit-def dead $st4, implicit-def dead $st5, implicit-def dead $st6, implicit-def dead $st7, implicit-def dead $mm0, implicit-def dead $mm1, implicit-def dead $mm2, implicit-def dead $mm3, implicit-def dead $mm4, implicit-def dead $mm5, implicit-def dead $mm6, implicit-def dead $mm7, implicit-def dead $xmm0, implicit-def dead $xmm1, implicit-def dead $xmm2, implicit-def dead $xmm3, implicit-def dead $xmm4, implicit-def dead $xmm5, implicit-def dead $xmm6, implicit-def dead $xmm7, implicit-def dead $xmm8, implicit-def dead $xmm9, implicit-def dead $xmm10, implicit-def dead $xmm11, implicit-def dead $xmm12, implicit-def dead $xmm13, implicit-def dead $xmm14, implicit-def dead $xmm15, implicit-def dead $eflags, implicit-def dead $df, implicit $rsp, implicit $ssp, debug-location !709; library/core/src/option.rs:630:15 @[ library/std/src/thread/local.rs:802:22 @[ library/std/src/thread/local.rs:969:23 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ] ] ]
  ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !709; library/core/src/option.rs:630:15 @[ library/std/src/thread/local.rs:802:22 @[ library/std/src/thread/local.rs:969:23 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ] ] ]
  %3:gr64 = COPY $rax, debug-location !709; library/core/src/option.rs:630:15 @[ library/std/src/thread/local.rs:802:22 @[ library/std/src/thread/local.rs:969:23 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ] ] ]
  %2:gr64 = nuw INC64r %3:gr64(tied-def 0), implicit-def dead $eflags
  CMP8mi %3:gr64, 1, $noreg, 0, $noreg, 0, implicit-def $eflags, debug-location !742 :: (dereferenceable load (s8) from @_ZN10proc_macro6bridge6server27ALREADY_RUNNING_SAME_THREAD7__getit5__KEY17hadc6be6d27cb5446E, !noalias !735, !range !734); library/core/src/option.rs:630:9 @[ library/std/src/thread/local.rs:802:22 @[ library/std/src/thread/local.rs:969:23 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ] ] ]
  JCC_1 %bb.2, 5, implicit $eflags, debug-location !743; library/std/src/thread/local.rs:969:17 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  JMP_1 %bb.1, debug-location !743; library/std/src/thread/local.rs:969:17 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]

bb.1 (%ir-block.4):
; predecessors: %bb.0
  successors: %bb.2(0x80000000); %bb.2(100.00%)

  ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  TLS_addr64 $noreg, 1, $noreg, target-flags(x86-tlsgd) @_ZN10proc_macro6bridge6server27ALREADY_RUNNING_SAME_THREAD7__getit5__KEY17hadc6be6d27cb5446E, $noreg, implicit-def $rax, implicit-def dead $rcx, implicit-def dead $rdx, implicit-def dead $rsi, implicit-def dead $rdi, implicit-def dead $r8, implicit-def dead $r9, implicit-def dead $r10, implicit-def dead $r11, implicit-def dead $fp0, implicit-def dead $fp1, implicit-def dead $fp2, implicit-def dead $fp3, implicit-def dead $fp4, implicit-def dead $fp5, implicit-def dead $fp6, implicit-def dead $fp7, implicit-def dead $st0, implicit-def dead $st1, implicit-def dead $st2, implicit-def dead $st3, implicit-def dead $st4, implicit-def dead $st5, implicit-def dead $st6, implicit-def dead $st7, implicit-def dead $mm0, implicit-def dead $mm1, implicit-def dead $mm2, implicit-def dead $mm3, implicit-def dead $mm4, implicit-def dead $mm5, implicit-def dead $mm6, implicit-def dead $mm7, implicit-def dead $xmm0, implicit-def dead $xmm1, implicit-def dead $xmm2, implicit-def dead $xmm3, implicit-def dead $xmm4, implicit-def dead $xmm5, implicit-def dead $xmm6, implicit-def dead $xmm7, implicit-def dead $xmm8, implicit-def dead $xmm9, implicit-def dead $xmm10, implicit-def dead $xmm11, implicit-def dead $xmm12, implicit-def dead $xmm13, implicit-def dead $xmm14, implicit-def dead $xmm15, implicit-def dead $eflags, implicit-def dead $df, implicit $rsp, implicit $ssp, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  %4:gr64 = COPY $rax, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  %5:gr32 = MOV32r0 implicit-def dead $eflags
  %6:gr64 = SUBREG_TO_REG 0, killed %5:gr32, %subreg.sub_32bit
  $rdi = COPY %4:gr64, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  $rsi = COPY %6:gr64, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  CALL64pcrel32 @"_ZN3std6thread5local4fast12Key$LT$T$GT$14try_initialize17h0ec110b6f6a5f822E.llvm.13792208312489416292", <regmask $bh $bl $bp $bph $bpl $bx $ebp $ebx $hbp $hbx $rbp $rbx $r12 $r13 $r14 $r15 $r12b $r13b $r14b $r15b $r12bh $r13bh $r14bh $r15bh $r12d $r13d $r14d $r15d $r12w $r13w $r14w $r15w $r12wh and 3 more...>, implicit $rsp, implicit $ssp, implicit $rdi, implicit $rsi, implicit-def $rsp, implicit-def $ssp, implicit-def $rax, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  %7:gr64 = COPY $rax, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  %0:gr64 = COPY %7:gr64, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]

bb.2 (%ir-block.6):
; predecessors: %bb.0, %bb.1
  successors: %bb.3(0x7ffff800), %bb.4(0x00000800); %bb.3(100.00%), %bb.4(0.00%)

  %1:gr64 = PHI %2:gr64, %bb.0, %0:gr64, %bb.1, debug-location !747; library/std/src/thread/local.rs:0 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
  TEST8mi %1:gr64, 1, $noreg, 0, $noreg, 1, implicit-def $eflags, debug-location !780 :: (load (s8) from %ir.7, !alias.scope !762, !noalias !745); library/proc_macro/src/bridge/server.rs:165:9
  MOV8mi %1:gr64, 1, $noreg, 0, $noreg, 1, debug-location !773 :: (store (s8) into %ir.7, !alias.scope !762, !noalias !745); library/core/src/ptr/mod.rs:1336:9 @[ library/core/src/mem/mod.rs:918:9 @[ library/core/src/cell.rs:413:9 @[ library/std/src/thread/local.rs:603:26 @[ library/std/src/thread/local.rs:446:16 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ] ] ]
  JCC_1 %bb.4, 5, implicit $eflags, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9
  JMP_1 %bb.3, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9

bb.3 (%ir-block.11):
; predecessors: %bb.2

  RET 0, debug-location !782; library/proc_macro/src/bridge/server.rs:170:6

bb.4 (%ir-block.12):
; predecessors: %bb.2

  LIFETIME_START %stack.0, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9
  %8:gr64 = LEA64r $rip, 1, $noreg, @anon.e76a1d14bfc7470edb601802a0a9c410.56, $noreg, debug-location !783; library/core/src/fmt/mod.rs:398:9 @[ library/proc_macro/src/bridge/server.rs:165:9 ]
  MOV64mr %stack.0, 1, $noreg, 0, $noreg, killed %8:gr64, debug-location !783 :: (store (s64) into %ir.1, !alias.scope !785, !noalias !788); library/core/src/fmt/mod.rs:398:9 @[ library/proc_macro/src/bridge/server.rs:165:9 ]
  MOV64mi32 %stack.0, 1, $noreg, 8, $noreg, 1, debug-location !783 :: (store (s64) into %ir.13, !alias.scope !785, !noalias !788); library/core/src/fmt/mod.rs:398:9 @[ library/proc_macro/src/bridge/server.rs:165:9 ]
  MOV64mi32 %stack.0, 1, $noreg, 16, $noreg, 0, debug-location !783 :: (store (s64) into %ir.14, !alias.scope !785, !noalias !788); library/core/src/fmt/mod.rs:398:9 @[ library/proc_macro/src/bridge/server.rs:165:9 ]
  %9:gr64 = LEA64r $rip, 1, $noreg, @anon.e76a1d14bfc7470edb601802a0a9c410.4, $noreg, debug-location !783; library/core/src/fmt/mod.rs:398:9 @[ library/proc_macro/src/bridge/server.rs:165:9 ]
  MOV64mr %stack.0, 1, $noreg, 32, $noreg, killed %9:gr64, debug-location !783 :: (store (s64) into %ir.15, !alias.scope !785, !noalias !788); library/core/src/fmt/mod.rs:398:9 @[ library/proc_macro/src/bridge/server.rs:165:9 ]
  MOV64mi32 %stack.0, 1, $noreg, 40, $noreg, 0, debug-location !783 :: (store (s64) into %ir.16, !alias.scope !785, !noalias !788); library/core/src/fmt/mod.rs:398:9 @[ library/proc_macro/src/bridge/server.rs:165:9 ]
  ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9
  %10:gr64 = LEA64r $rip, 1, $noreg, @anon.e76a1d14bfc7470edb601802a0a9c410.58, $noreg, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9
  %11:gr64 = LEA64r %stack.0, 1, $noreg, 0, $noreg
  $rdi = COPY %11:gr64, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9
  $rsi = COPY %10:gr64, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9
  CALL64m $rip, 1, $noreg, target-flags(x86-gotpcrel) @_ZN4core9panicking9panic_fmt17h54a81d5809e2c881E, $noreg, <regmask $bh $bl $bp $bph $bpl $bx $ebp $ebx $hbp $hbx $rbp $rbx $r12 $r13 $r14 $r15 $r12b $r13b $r14b $r15b $r12bh $r13bh $r14bh $r15bh $r12d $r13d $r14d $r15d $r12w $r13w $r14w $r15w $r12wh and 3 more...>, implicit $rsp, implicit $ssp, implicit $rdi, implicit $rsi, implicit-def $rsp, implicit-def $ssp, debug-location !780 :: (load (s64) from got); library/proc_macro/src/bridge/server.rs:165:9
  ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !780; library/proc_macro/src/bridge/server.rs:165:9
  TRAP debug-location !780; library/proc_macro/src/bridge/server.rs:165:9

# End machine code for function _ZN10proc_macro6bridge6server22RunningSameThreadGuard3new17hd07da82ffb49fc2aE.

*** Bad machine code: FrameSetup is after another FrameSetup ***
- function:    _ZN10proc_macro6bridge6server22RunningSameThreadGuard3new17hd07da82ffb49fc2aE
- basic block: %bb.1  (0x7f294866f2e0)
- instruction: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]

*** Bad machine code: FrameDestroy is not after a FrameSetup ***
- function:    _ZN10proc_macro6bridge6server22RunningSameThreadGuard3new17hd07da82ffb49fc2aE
- basic block: %bb.1  (0x7f294866f2e0)
- instruction: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !744; library/std/src/thread/local.rs:971:29 @[ library/std/src/thread/local.rs:346:21 @[ library/std/src/thread/local.rs:445:32 @[ library/std/src/thread/local.rs:422:9 @[ library/std/src/thread/local.rs:603:9 @[ library/proc_macro/src/bridge/server.rs:164:31 ] ] ] ] ]
LLVM ERROR: Found 2 machine code errors.

Did not run successfully: exit status: 101
"/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "--crate-name" "proc_macro" "--edition=2021" "library/proc_macro/src/lib.rs" "--error-format=json" "--json=diagnostic-rendered-ansi,artifacts,future-incompat" "--crate-type" "lib" "--emit=dep-info,metadata,link" "-C" "opt-level=3" "-C" "embed-bitcode=no" "-C" "debuginfo=1" "-C" "debug-assertions=on" "-Zunstable-options" "--check-cfg" "names()" "--check-cfg" "values()" "-C" "metadata=de3ffe529f393522" "-C" "extra-filename=-de3ffe529f393522" "--out-dir" "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps" "--target" "x86_64-unknown-linux-gnu" "-L" "dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps" "-L" "dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/release/deps" "--extern" "core=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libcore-05d65ceee8b68e1f.rmeta" "--extern" "std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.so" "--extern" "std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.rlib" "-Csymbol-mangling-version=legacy" "-Zunstable-options" "-Zunstable-options" "--check-cfg=values(bootstrap)" "--check-cfg=values(stdarch_intel_sde)" "--check-cfg=values(no_fp_fmt_parse)" "--check-cfg=values(no_global_oom_handling)" "--check-cfg=values(no_rc)" "--check-cfg=values(no_sync)" "--check-cfg=values(freebsd12)" "--check-cfg=values(backtrace_in_libstd)" "--check-cfg=values(target_env,\"libnx\")" "--check-cfg=values(target_os,\"watchos\")" "--check-cfg=values(target_arch,\"asmjs\",\"spirv\",\"nvptx\",\"nvptx64\",\"le32\",\"xtensa\")" "--check-cfg=values(dont_compile_me)" "--check-cfg=values(rustix_use_libc)" "-Zmacro-backtrace" "-Clink-args=-Wl,-z,origin" "-Clink-args=-Wl,-rpath,$ORIGIN/../lib" "-Csplit-debuginfo=off" "-Zsave-analysis" "-Cprefer-dynamic" "-Cembed-bitcode=yes" "-Zcrate-attr=doc(html_root_url=\"https://doc.rust-lang.org/nightly/\")" "-Z" "binary-dep-depinfo" "-L" "native=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/build/compiler_builtins-1dd36b1385d26063/out" "-Wrust_2018_idioms" "-Wunused_lifetimes" "-Wsemicolon_in_expressions_from_macros" "-Dwarnings" "--sysroot" "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1" "-Z" "force-unstable-if-unmarked"
-------------
error: could not compile `proc_macro`

Caused by:
  process didn't exit successfully: `CARGO=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/bin/cargo CARGO_CRATE_NAME=proc_macro CARGO_MANIFEST_DIR=/home/matthias/vcs/github/rust_debug_assertions/library/proc_macro CARGO_PKG_AUTHORS='' CARGO_PKG_DESCRIPTION='' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=proc_macro CARGO_PKG_REPOSITORY='' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.0.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' LD_LIBRARY_PATH='/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/release/deps:/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/lib' /home/matthias/.cargo/bin/sccache /home/matthias/vcs/github/rust_debug_assertions/build/bootstrap/debug/rustc --crate-name proc_macro --edition=2021 library/proc_macro/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no -C debuginfo=1 -C debug-assertions=on -Zunstable-options --check-cfg 'names()' --check-cfg 'values()' -C metadata=de3ffe529f393522 -C extra-filename=-de3ffe529f393522 --out-dir /home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps --target x86_64-unknown-linux-gnu -L dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/release/deps --extern core=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libcore-05d65ceee8b68e1f.rmeta --extern std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.so --extern std=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd-56dc346069f0fc86.rlib -Csymbol-mangling-version=legacy -Zunstable-options -Zunstable-options '--check-cfg=values(bootstrap)' '--check-cfg=values(stdarch_intel_sde)' '--check-cfg=values(no_fp_fmt_parse)' '--check-cfg=values(no_global_oom_handling)' '--check-cfg=values(no_rc)' '--check-cfg=values(no_sync)' '--check-cfg=values(freebsd12)' '--check-cfg=values(backtrace_in_libstd)' '--check-cfg=values(target_env,"libnx")' '--check-cfg=values(target_os,"watchos")' '--check-cfg=values(target_arch,"asmjs","spirv","nvptx","nvptx64","le32","xtensa")' '--check-cfg=values(dont_compile_me)' '--check-cfg=values(rustix_use_libc)' -Zmacro-backtrace -Clink-args=-Wl,-z,origin '-Clink-args=-Wl,-rpath,$ORIGIN/../lib' -Csplit-debuginfo=off -Zsave-analysis -Cprefer-dynamic -Cembed-bitcode=yes '-Zcrate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/")' -Z binary-dep-depinfo -L native=/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/build/compiler_builtins-1dd36b1385d26063/out` (exit status: 101)
command did not execute successfully: "/home/matthias/vcs/github/rust_debug_assertions/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "x86_64-unknown-linux-gnu" "-Zcheck-cfg=names,values,output" "-Zbinary-dep-depinfo" "-j" "1" "-v" "-v" "-v" "-v" "-v" "-v" "-v" "--release" "--features" "panic-unwind backtrace compiler-builtins-c" "--manifest-path" "/home/matthias/vcs/github/rust_debug_assertions/library/test/Cargo.toml" "--message-format" "json-render-diagnostics"
expected success, got: exit status: 101
Traceback (most recent call last):
  File "/home/matthias/vcs/github/rust_debug_assertions/./x.py", line 28, in <module>
    bootstrap.main()
  File "/home/matthias/vcs/github/rust_debug_assertions/src/bootstrap/bootstrap.py", line 936, in main
    bootstrap(help_triggered)
  File "/home/matthias/vcs/github/rust_debug_assertions/src/bootstrap/bootstrap.py", line 922, in bootstrap
    run(args, env=env, verbose=build.verbose, is_bootstrap=True)
  File "/home/matthias/vcs/github/rust_debug_assertions/src/bootstrap/bootstrap.py", line 166, in run
    raise RuntimeError(err)
RuntimeError: failed to run: /home/matthias/vcs/github/rust_debug_assertions/build/bootstrap/debug/bootstrap build -j 1 -vvvvvvv

[TimNN]

I've been looking at this a bit, it does reproduce with:

[profile.release.package.proc_macro]
opt-level = 0
codegen-units = 1

_{(This issue caught my interest because before https://reviews.llvm.org/D133036 was rolled back, it caused rustc to crash with a SIGILL in proc_macro (though this might also have been an issue with the patch and in general may be entirely unrelated here) when compiled at LLVM HEAD with that patch).}

The error from the first comment fails in RunningSameThreadGuard::new, I'm seeing failures related to BRIDGE_STATE. One thing that both of these have in common is that they are / use thread_local!, which seems suspicious.

[TimNN]

This Rust code reproduces the issue:

thread_local! {
    static FOO: u32 = 0;
}

I'm having trouble reproing with llc, probably because the TLS configurations used by rustc and llc are different: The generated LLVM IR is basically identical (except that one function is define hidden and the other define internal), but the first Machine code is different.

llc produces: %4:gr64 = MOV64rm $noreg, 1, $noreg, 0, $fs :: (load (s64) from `ptr addrspace(257) null`, addrspace 257)

rustc produces: TLS_base_addr64 $noreg, 1, $noreg, target-flags(x86-tlsld) @_ZN5repro3FOO7__getit5__KEY17h8a371060d0f5b551E, $noreg, implicit-def $rax, implicit-def dead $rcx, <lots more implicit-def dead regs>, implicit $rsp, implicit $ssp

edit: found the missing piece, the llc invocation was missing -relocation-model=pic.

[TimNN]

Minified, crashes when compiled with llc -relocation-model=pic min.ll:

; ModuleID = 'bugpoint-reduced-simplified.bc'
source_filename = "repro.dba56e2e-cgu.0"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@_ZN5repro3FOO7__getit5__KEY17h8a371060d0f5b551E = external thread_local global <{ [4 x i8], [4 x i8], [1 x i8], [3 x i8] }>, align 4

declare ptr @"_ZN3std6thread5local4fast12Key$LT$T$GT$3get17h336c607071ef2f69E"(ptr, ptr) unnamed_addr #0

define hidden ptr @_ZN5repro3FOO7__getit17hcc9532ca2598edd1E(ptr %init) unnamed_addr #0 {
start:
  %0 = call align 4 ptr @"_ZN3std6thread5local4fast12Key$LT$T$GT$3get17h336c607071ef2f69E"(ptr align 4 @_ZN5repro3FOO7__getit5__KEY17h8a371060d0f5b551E, ptr align 4 undef)
  unreachable
}

attributes #0 = { "target-cpu"="x86-64" }

!llvm.module.flags = !{!0}

!0 = !{i32 2, !"RtLibUseGOT", i32 1}