[llvm-bugs] [Bug 50737] New: Flaky regressions tests exit with segmentation fault at program end

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=50737

            Bug ID: 50737
           Summary: Flaky regressions tests exit with segmentation fault
                    at program end
           Product: OpenMP
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Runtime Library
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm at meinersbur.de
                CC: llvm-bugs at lists.llvm.org, tianshilei1992 at gmail.com,
                    xw111luoye at gmail.com

Some libomp regression tests occasionally exit with error -11 (segmentation
fault) when exiting (expected: exit code 0 indicating success).

Examples of buildbot failures:


== https://lab.llvm.org/staging/#/builders/155/builds/721

******************** TEST 'libomp :: tasking/hidden_helper_task/depend.cpp'
FAILED ********************
Script:
--
: 'RUN: at line 1';  
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/./bin/clang++
-fopenmp -pthread -fno-experimental-isel  -I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test
-I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/src
-L
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/lib
 -I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/ompt
-std=c++14
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/tasking/hidden_helper_task/depend.cpp
-o
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/depend.cpp.tmp
-lm -latomic &&
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/depend.cpp.tmp
--
Exit Code: -11
Command Output (stdout):
--
$ ":" "RUN: at line 1"
$
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/./bin/clang++"
"-fopenmp" "-pthread" "-fno-experimental-isel" "-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test"
"-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/src"
"-L"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/lib"
"-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/ompt"
"-std=c++14"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/tasking/hidden_helper_task/depend.cpp"
"-o"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/depend.cpp.tmp"
"-lm" "-latomic"
$
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/depend.cpp.tmp"
# command output:
PASS
error: command failed with exit status: -11
--
********************


== https://lab.llvm.org/staging/#/builders/155/builds/444

******************** TEST 'libomp :: tasking/hidden_helper_task/gtid.cpp'
FAILED ********************
Script:
--
: 'RUN: at line 1';  
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/./bin/clang++
-fopenmp -pthread -fno-experimental-isel  -I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test
-I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/src
-L
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/lib
 -I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/ompt
-std=c++14
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/tasking/hidden_helper_task/gtid.cpp
-o
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/gtid.cpp.tmp
-lm -latomic &&
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/gtid.cpp.tmp
--
Exit Code: -11
Command Output (stdout):
--
$ ":" "RUN: at line 1"
$
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/./bin/clang++"
"-fopenmp" "-pthread" "-fno-experimental-isel" "-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test"
"-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/src"
"-L"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/lib"
"-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/ompt"
"-std=c++14"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/tasking/hidden_helper_task/gtid.cpp"
"-o"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/gtid.cpp.tmp"
"-lm" "-latomic"
$
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/gtid.cpp.tmp"
# command output:
PASS
error: command failed with exit status: -11
--
********************


== https://lab.llvm.org/staging/#/builders/155/builds/701

******************** TEST 'libomp :: tasking/hidden_helper_task/taskgroup.cpp'
FAILED ********************
Script:
--
: 'RUN: at line 1';  
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/./bin/clang++
-fopenmp -pthread -fno-experimental-isel  -I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test
-I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/src
-L
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/lib
 -I
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/ompt
-std=c++14
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/tasking/hidden_helper_task/taskgroup.cpp
-o
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/taskgroup.cpp.tmp
-lm -latomic &&
/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/taskgroup.cpp.tmp
--
Exit Code: -11
Command Output (stdout):
--
$ ":" "RUN: at line 1"
$
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/./bin/clang++"
"-fopenmp" "-pthread" "-fno-experimental-isel" "-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test"
"-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/src"
"-L"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/lib"
"-I"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/ompt"
"-std=c++14"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.src/openmp/runtime/test/tasking/hidden_helper_task/taskgroup.cpp"
"-o"
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/taskgroup.cpp.tmp"
"-lm" "-latomic"
$
"/home/buildbot-worker/minipc-1050ti-linux/openmp-offload-cuda-project/llvm.build/projects/openmp/runtime/test/tasking/hidden_helper_task/Output/taskgroup.cpp.tmp"
# command output:
PASS
error: command failed with exit status: -11
--
********************

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