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Consider test-case:
...
int
main (void)
{
#pragma acc parallel async
;
#pragma acc parallel async
;
#pragma acc wait
return 0;
}
...
This fails with:
...
libgomp: cuMemAlloc error: invalid argument
Segmentation fault (core dumped)
...
The cuMemAlloc error is due to the fact that we're try to allocate 0 bytes.
Fix this by preventing calling map_push with size zero argument in nvptx_exec.
This also has the consequence that for the abort-1.c test-case, we end up
calling cuMemFree during map_fini for the struct cuda_map allocated in
map_init, which fails because an abort happened. Fix this by calling
cuMemFree with CUDA_CALL_NOCHECK in cuda_map_destroy.
2019-01-23 Tom de Vries <tdevries@suse.de>
PR target/PR88946
* plugin/plugin-nvptx.c (cuda_map_destroy): Use CUDA_CALL_NOCHECK for
cuMemFree.
(nvptx_exec): Don't call map_push if mapnum == 0.
* testsuite/libgomp.oacc-c-c++-common/pr88946.c: New test.
From-SVN: r268178
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