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/* { dg-do compile } */
/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=1" } */
 
/* Based on strict-overflow-5.c.  */
 
/* We can only unroll when using strict overflow semantics.  But we
   don't issue a warning for relying on undefined overflow in
   loops.  */
 
int foo (int i)
{
  int index;
  int r=0;
 
  for (index = i; index <= i+4; index+=2)
    r++;
 
  return r;
}