[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / torture / pr39074.c

/* { dg-do run } */
/* { dg-options "-fdump-tree-alias" } */
/* { dg-skip-if "" { *-*-* } { "-O0" "-fno-fat-lto-objects" } { "" } } */

typedef __INTPTR_TYPE__ intptr_t;

int i;
void __attribute__((noinline))
foo(long b, intptr_t q)
{
  int *y;
  int **a = &y, **x;
  int ***p;
  if (b)
    p = (int ***)q;
  else
    p = &a;
  x = *p;
  *x = &i;  /* *ANYTHING = &i has to make sure that y points to i.  */
  *y = 0;
}
extern void abort (void);
int main()
{
  i = 1;
  foo (0, 0);
  if (i != 0)
    abort ();
  return 0;
}

/* { dg-final { scan-tree-dump "y.._. = { i }" "alias" } } */
/* { dg-final { scan-tree-dump "y.._., points-to NULL, points-to vars: { D..... }" "alias" } } */
Commit	Line	Data
9e39dba6 RG	1	/* { dg-do run } */
9e39dba6 RG	2	/* { dg-options "-fdump-tree-alias" } */
6778ae9d	3	/* { dg-skip-if "" { --* } { "-O0" "-fno-fat-lto-objects" } { "" } } */
9e39dba6	4
30235ede	5	typedef __INTPTR_TYPE__ intptr_t;
60adb641	6
9e39dba6 RG	7	int i;
9e39dba6 RG	8	void __attribute__((noinline))
60adb641	9	foo(long b, intptr_t q)
9e39dba6 RG	10	{
	11	int *y;
	12	int a = &y, x;
	13	int ***p;
	14	if (b)
	15	p = (int ***)q;
	16	else
	17	p = &a;
	18	x = *p;
	19	x = &i; / ANYTHING = &i has to make sure that y points to i. /
	20	*y = 0;
	21	}
	22	extern void abort (void);
	23	int main()
	24	{
	25	i = 1;
	26	foo (0, 0);
	27	if (i != 0)
	28	abort ();
	29	return 0;
	30	}
	31
9c09f152	32	/* { dg-final { scan-tree-dump "y.._. = { i }" "alias" } } */
735b8f9f	33	/* { dg-final { scan-tree-dump "y.._., points-to NULL, points-to vars: { D..... }" "alias" } } */