Bug#1104731: clang-19: Stack dump on a specific emscripten test

[Jérémy Lal]

Package: clang-19
Version: 1:19.1.7-3
Severity: normal

Hi,

one of emscripten tests is failing with:

PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: /usr/bin/clang-19 -target wasm32-unknown-emscripten -fignore-exceptions -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr --sysroot=/build/reproducible-path/emscripten-3.1.69+dfsg/debian/em_cache/sysroot -DEMSCRIPTEN -Werror=implicit-function-declaration -Xclang -iwithsysroot/include/fakesdl -Xclang -iwithsysroot/include/compat -Werror -O2 -Wno-unused-command-line-argument /build/reproducible-path/emscripten-3.1.69+dfsg/test/core/test_float_builtins.c -c -o /tmp/emscripten_temp_gs20qvhl/test_float_builtins_0.o
../..
see full build log at https://buildd.debian.org/status/fetch.php?pkg=emscripten&arch=all&ver=3.1.69%2Bdfsg-2&stamp=1746437292&raw=0

Should I hope to see this fixed in llvm,
or should I just consider that test to not be compatible with llvm-19 ?

Is it worth collecting the diagnostics ?

-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.25-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages clang-19 depends on:
ii  binutils                2.44-3
ii  libc6                   2.41-7
ii  libc6-dev               2.41-7
ii  libclang-common-19-dev  1:19.1.7-3
ii  libclang-cpp19          1:19.1.7-3
ii  libclang1-19            1:19.1.7-3
ii  libgcc-14-dev           14.2.0-19
ii  libgcc-s1               14.2.0-19
ii  libllvm19               1:19.1.7-3
ii  libobjc-14-dev          14.2.0-19
ii  libstdc++-14-dev        14.2.0-19
ii  libstdc++6              14.2.0-19
ii  llvm-19-linker-tools    1:19.1.7-3

Versions of packages clang-19 recommends:
ii  clang-tools-19  1:19.1.7-3
ii  llvm-19-dev     1:19.1.7-3
ii  python3         3.13.3-1

Versions of packages clang-19 suggests:
pn  clang-19-doc  <none>
ii  wasi-libc     0.0~git20241209.574b88d-2

-- no debconf information