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/* { dg-do run } */
/* { dg-options "-O2 -fipa-pta -fno-tree-fre -fno-tree-sra -fdump-ipa-pta-details" } */
struct X {
int i;
void *p;
};
static void * __attribute__((noinline,noclone))
foo(struct X *q, void *p)
{
struct X b;
b.p = p;
*q = b;
return q->p;
}
extern void abort (void);
int main()
{
struct X a, c;
void *p;
a.p = (void *)&c;
p = foo(&a, &a);
/* { dg-final { scan-ipa-dump "foo.result = { NULL a\[^ \]* c\[^ \]* }" "pta" { xfail *-*-* } } } */
/* { dg-final { scan-ipa-dump "foo.result = { NULL a\[^ \]* a\[^ \]* c\[^ \]* }" "pta" { target { ! keeps_null_pointer_checks } } } } */
/* { dg-final { scan-ipa-dump "foo.result = { NONLOCAL a\[^ \]* a\[^ \]* c\[^ \]* }" "pta" { target { keeps_null_pointer_checks } } } } */
((struct X *)p)->p = (void *)0;
if (a.p != (void *)0)
abort ();
return 0;
}
/* { dg-final { cleanup-ipa-dump "pta" } } */
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