https://llvm.org/bugs/show_bug.cgi?id=25820
Bug ID: 25820
Summary: orph_test_omp_parallel_copyin from OpenMP3.1
Validation test suite segfaults when built with
current 3.8svn
Product: OpenMP
Version: unspecified
Hardware: Macintosh
OS: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: Clang Compiler Support
Assignee: unassignedclangb...@nondot.org
Reporter: howarth.mailing.li...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
The orph_test_omp_parallel_copyin test case from the OpenMP3.1 Validation test
suite segfaults when built with current 3.8svn compiler on
x86_64-apple-darwin15.
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
This is the only regression observed in the ctest run of that test suite. The
issue occurs at all optimization levels.
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