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re PR middle-end/30286 (Segfault with -O2 -ftrapv)

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PR middle-end/30286
	* gcc.dg/pr30286.c: New test.

From-SVN: r120387
This commit is contained in:
Jakub Jelinek 2007-01-03 09:04:11 +01:00 committed by Jakub Jelinek
parent a590ac6560
commit 900f1ea9fa
2 changed files with 40 additions and 0 deletions
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3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2007-01-03 Jakub Jelinek <jakub@redhat.com>
PR middle-end/30286
* gcc.dg/pr30286.c: New test.
PR c++/29535
* g++.dg/template/crash66.C: New test.

37
gcc/testsuite/gcc.dg/pr30286.c Normal file
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/* PR middle-end/30286 */
/* { dg-do run } */
/* { dg-options "-O2 -ftrapv" } */
extern void abort (void);
struct S { struct S *s; };
struct T { struct S *t[25]; };
void
__attribute__((noinline))
foo (int i, struct T *x, struct S *y)
{
int j;
for (j = 14; j > i; j--)
x->t[j] = y->s;
}
int
main (void)
{
struct S s;
struct T t;
int i;
s.s = &s;
__builtin_memset (&t, 0, sizeof (t));
foo (6, &t, &s);
for (i = 0; i < 25; i++)
if (t.t[i] != ((i > 6 && i <= 14) ? &s : (struct S *) 0))
abort ();
__builtin_memset (&t, 0, sizeof (t));
foo (-1, &t, &s);
for (i = 0; i < 25; i++)
if (t.t[i] != ((i >= 0 && i <= 14) ? &s : (struct S *) 0))
abort ();
return 0;
}