[Openmp-dev] orph_test_omp_parallel_copyin segfault

[Jack Howarth via Openmp-dev]

Jonathan,
      The attached header omp_testsuite.h and
orph_test_omp_parallel_copyin.c source file are required to reproduce
the crash at any optimization level using -fopenmp.
                 Jack

On Fri, Dec 11, 2015 at 6:12 PM, Peyton, Jonathan L
<jonathan.l.peyton at intel.com> wrote:
> Are you using trunk versions of both clang and libomp?  I only use the check-libomp target now in CMake and don't see any problems with the trunk version of libomp on Darwin.  Can you send me the source file for orph_test_omp_parallel_copyin.c and I'll take a look at it.
>
> -- Johnny
>
> -----Original Message-----
> From: Openmp-dev [mailto:openmp-dev-bounces at lists.llvm.org] On Behalf Of Jack Howarth via Openmp-dev
> Sent: Friday, December 11, 2015 4:17 PM
> To: openmp-dev (openmp-dev at lists.llvm.org)
> Subject: [Openmp-dev] orph_test_omp_parallel_copyin segfault
>
> Is anyone else seeing segfaults in the orph_test_omp_parallel_copyin test case from the OpenMP3.1_Validation test suite? On x86_64-apple-darwin15, todays trunk produces,,,
>
> Jacks-Mac-Pro:c howarth$ clang-3.8 -fopenmp -O0 -g orph_test_omp_parallel_copyin.c -o orph_test_omp_parallel_copyin Jacks-Mac-Pro:c howarth$ lldb ./orph_test_omp_parallel_copyin
> (lldb) target create "./orph_test_omp_parallel_copyin"
> Current executable set to './orph_test_omp_parallel_copyin' (x86_64).
> (lldb) r
> Process 38235 launched: './orph_test_omp_parallel_copyin' (x86_64) ######## OpenMP Validation Suite V 3.0a ######
> ## Repetitions:  20                       ####
> ## Loop Count :   1000                    ####
> ##############################################
> Testing omp parallel copyin
>
> Process 38235 stopped
> * thread #1: tid = 0x17a2d4, 0x00007fff9ae780a5 libsystem_c.dylib`flockfile + 4, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
>     frame #0: 0x00007fff9ae780a5 libsystem_c.dylib`flockfile + 4
> libsystem_c.dylib`flockfile:
> ->  0x7fff9ae780a5 <+4>:  movq   0x68(%rdi), %rdi
>     0x7fff9ae780a9 <+8>:  addq   $0x8, %rdi
>     0x7fff9ae780ad <+12>: popq   %rbp
>     0x7fff9ae780ae <+13>: jmp    0x7fff9aec1452            ; symbol
> stub for: pthread_mutex_lock
>
> which is the only regression observed in the ctest run of the test suite.
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