1/* { dg-do compile } */
2/* { dg-options "-O2 -fdump-tree-isolate-paths -fdump-tree-optimized" } */
3/* { dg-skip-if "" keeps_null_pointer_checks } */
4
5struct demangle_component
6{
7
8  int type;
9  int zzz;
10
11};
12
13struct d_info
14{
15  struct demangle_component *comps;
16  int next_comp;
17  int num_comps;
18};
19
20void foo (int);
21void bar (int);
22
23static struct demangle_component *
24d_make_empty (struct d_info *di)
25{
26  struct demangle_component *p;
27
28  if (di->next_comp >= di->num_comps)
29    return ((void *)0);
30  p = &di->comps[di->next_comp];
31  return p;
32}
33
34struct demangle_component *
35d_type (struct d_info *di)
36{
37   struct demangle_component *ret;
38   ret = d_make_empty (di);
39   foo (ret->type);
40   bar (ret->zzz);
41   return ret;
42}
43
44/* We're testing two aspects of isolation here.  First that isolation
45   occurs, second that if we have two null dereferences in a block that
46   that we delete everything from the first dereferece to the end of the
47   block, regardless of which comes first in the immediate use iterator.
48
49   We leave the 0->type in the IL, so expect to see ->type twice.  */
50/* { dg-final { scan-tree-dump-times "__builtin_trap" 1 "isolate-paths"} } */
51/* { dg-final { scan-tree-dump-times "->type" 2 "isolate-paths"} } */
52/* { dg-final { scan-tree-dump-times "->type" 1 "optimized"} } */
53/* { dg-final { scan-tree-dump-times "\\.type" 1 "optimized"} } */
54/* { dg-final { scan-tree-dump-times "->zzz" 1 "isolate-paths"} } */
55/* { dg-final { cleanup-tree-dump "isolate-paths" } } */
56/* { dg-final { cleanup-tree-dump "optimized" } } */
57