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/* { dg-do compile } */

/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow" } */

/* Don't warn about an overflow when folding i > 0.  The loop analysis

   should determine that i does not wrap.

   The test is really bogus, p->a - p->b can be larger than INT_MAX

   and thus i can very well wrap.  */

struct c { unsigned int a; unsigned int b; };

extern void bar (struct c *);

int

foo (struct c *p)

{

  int i;

  int sum = 0;

  for (i = 0; i < p->a - p->b; ++i)

    {

      if (i > 0)  /* { dg-bogus "warning" "" { xfail *-*-* } } */

        sum += 2;

      bar (p);

    }

  return sum;

}