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/* PR tree-optimization/22117
VRP used think that &p[q] is nonzero even though p and q are both
known to be zero after entering the first two "if" statements. */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-vrp1" } */
void
foo (int *p, int q)
{
if (p == 0)
{
if (q == 0)
{
int *r = &p[q];
if (r != 0)
link_error ();
}
}
}
/* { dg-final { scan-tree-dump-times "Folding predicate r_.* != 0B to 0" 1 "vrp1" } } */
/* { dg-final { cleanup-tree-dump "vrp1" } } */
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