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/* { dg-do compile } */
/* { dg-options "-O2 -fisolate-erroneous-paths-attribute -fdump-tree-isolate-paths -fdump-tree-phicprop1" } */
extern void foo(void *) __attribute__ ((__nonnull__ (1)));
int z;
void
com (int a)
{
foo (a == 42 ? &z : (void *) 0);
}
void
bar (void)
{
foo ((void *)0);
}
/* We testing that the path isolation code can take advantage of the
returns non-null attribute to isolate a path where NULL flows into
a return statement.
We also verify that after isolation phi-cprop simplifies the
return statement so that it returns &z directly.
/* { dg-final { scan-tree-dump-times "__builtin_trap" 2 "isolate-paths"} } */
/* { dg-final { scan-tree-dump-times "foo .&z.;" 1 "phicprop1"} } */
/* { dg-final { cleanup-tree-dump "isolate-paths" } } */
/* { dg-final { cleanup-tree-dump "phicprop1" } } */
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