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/* { dg-do run } */
/* { dg-options "-fdump-tree-alias" } */
/* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
extern void abort (void);
struct X {
int *p;
int *q;
int *r;
};
int __attribute__((noinline))
foo(int i, int j, int k, int off)
{
struct X x;
int **p, *q;
x.p = &i;
x.q = &j;
x.r = &k;
p = &x.q;
p += off;
/* *p points to { i, j, k } */
q = *p;
return *q;
}
int main()
{
if (foo(1, 2, 3, -1) != 1)
abort ();
if (foo(1, 2, 3, 0) != 2)
abort ();
if (foo(1, 2, 3, 1) != 3)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump "q_., points-to vars: { i j k }" "alias" } } */
/* { dg-final { cleanup-tree-dump "alias" } } */
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