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ASAN: do not unpoison in OpenMP context

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gcc/ChangeLog:

	PR sanitizer/99877
	* gimplify.c (gimplify_expr): Right now, we unpoison all
	variables before a goto <dest>. We should not do it if we are
	in a omp context.

gcc/testsuite/ChangeLog:

	PR sanitizer/99877
	* g++.dg/asan/pr99877.C: New test.
This commit is contained in:
Martin Liska 2021-04-12 10:49:41 +02:00
parent 91dd7954c4
commit 598359f627
2 changed files with 21 additions and 1 deletions
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3
gcc/gimplify.c
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@ -14328,7 +14328,8 @@ gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
Doing so would prevent us from reporting a false positives. */
if (asan_poisoned_variables
&& asan_used_labels != NULL
&& asan_used_labels->contains (label))
&& asan_used_labels->contains (label)
&& !gimplify_omp_ctxp)
asan_poison_variables (asan_poisoned_variables, false, pre_p);
break;

19
gcc/testsuite/g++.dg/asan/pr99877.C Normal file
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@ -0,0 +1,19 @@
/* PR sanitizer/99877*/
/* { dg-options "-fsanitize=address -fopenmp -O2" } */
struct vector
{
int size ();
};
int
main ()
{
vector outqueue;
#pragma omp parallel
{
goto continueloop;
continueloop:;
}
for (; outqueue.size ();)
;
}