diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr22117.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr22117.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr22117.c b/gcc/testsuite/gcc.dg/tree-ssa/pr22117.c new file mode 100644 index 000000000..d265d5e2c --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr22117.c @@ -0,0 +1,23 @@ +/* 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" } } */ |