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* [gcc r11-6825] Re: trapv question
@ 2021-01-20 21:31 Andrew Macleod
0 siblings, 0 replies; only message in thread
From: Andrew Macleod @ 2021-01-20 21:31 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:842afc4e289ed3fe69583672c1a180f268d73799
commit r11-6825-g842afc4e289ed3fe69583672c1a180f268d73799
Author: Andrew MacLeod <amacleod@redhat.com>
Date: Wed Jan 20 16:27:34 2021 -0500
Re: trapv question
Adjust testcase to so the ADD that is expected to overflow cannot
be optimized.
gcc/testsuite
* gcc.dg/torture/ftrapv-2.c: Make overflow instruction unremovable.
Diff:
---
gcc/testsuite/gcc.dg/torture/ftrapv-2.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gcc/testsuite/gcc.dg/torture/ftrapv-2.c b/gcc/testsuite/gcc.dg/torture/ftrapv-2.c
index 75e464fe557..4d746c9ce5c 100644
--- a/gcc/testsuite/gcc.dg/torture/ftrapv-2.c
+++ b/gcc/testsuite/gcc.dg/torture/ftrapv-2.c
@@ -12,7 +12,7 @@
/* Verify SImode operations properly trap. PR middle-end/68046 */
-int i = 0x7fffffff;
+volatile int i = 0x7fffffff;
int main(void)
{
@@ -20,7 +20,7 @@ int main(void)
int status = 0;
if (child == 0)
{
- volatile int x = i + 1 < i;
+ i = i + 1;
exit (0);
}
else if (child == -1)
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