| Issue |
144678
|
| Summary |
[test-suite] Test failures with libstdc++ 15
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
T0b1-iOS
|
When compiling the llvm-test-suite on Fedora 42, there are now test failures introduced because of asserts hit in the STL. Specifically, the following tests fail:
```
Failed Tests (7):
test-suite :: MultiSource/Benchmarks/DOE-ProxyApps-C++/CLAMR/CLAMR.test
test-suite :: MultiSource/Benchmarks/DOE-ProxyApps-C++/PENNANT/PENNANT.test
test-suite :: MultiSource/Benchmarks/DOE-ProxyApps-C++/miniFE/miniFE.test
test-suite :: SingleSource/UnitTests/Vectorizer/VPlanNativePath/outer-loop-vect.test
test-suite :: SingleSource/UnitTests/Vectorizer/any-of.test
test-suite :: SingleSource/UnitTests/Vectorizer/find-last.test
test-suite :: SingleSource/UnitTests/matrix-types-spec.test
```
The Vectorizer tests and `matrix-types-spec` seem to fail because `std::numeric_limits<int32_t>::min()` and `std::numeric_limits<int32_t>::max()` are passed into a `uniform_int_distribution<uint64_t>` (vice-versa for `matrix-types-spec`.
For the rest I didn't have time to check yet but they all hit asserts because they access a vector out of bounds.
To reproduce:
I would assume any system with libstdc++/gcc 15 will do.
```
cmake -GNinja -Bllvm-test-suite-build -Ccmake/caches/O0.cmake -DCMAKE_C_COMPILER=clang-20 -DCMAKE_CXX_COMPILER=clang++-20 -DTEST_SUITE_SUBDIRS="MultiSource;SingleSource" -DTEST_SUITE_RUN_BENCHMARKS=true -DTEST_SUITE_COLLECT_CODE_SIZE=false
```
```
ninja -C llvm-test-suite-build
```
```
lit -v llvm-test-suite-build
```
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