gcc-4.9/gcc/testsuite/gcc.dg/pr48739-1.c


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/* PR tree-optimization/48739 */
/* { dg-do compile } */
/* { dg-require-effective-target pthread } */
/* { dg-options "-O1 -ftree-parallelize-loops=2 -fno-tree-dominator-opts" } */

extern int g;
extern void bar (void);

int
foo (int x)
{
  int a, b, *c = (int *) 0;
  for (a = 0; a < 10; ++a)
    {
      bar ();
      for (b = 0; b < 5; ++b)
	{
	  x = 0;
	  c = &x;
	  g = 1;
	}
    }
  *c = x;
  for (x = 0; x != 10; x++)
    ;
  return g;
}