gcc/testsuite/gcc.dg/pr36227.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -Wstrict-overflow=3" } */
   3
   4 volatile unsigned long *
   5 sat_add(volatile unsigned long *ptr, unsigned long i, volatile unsigned long *end)
   6 {
   7   if ((unsigned long)ptr + i * sizeof(*ptr) > (unsigned long)ptr) /* { dg-bogus "pointer wraparound" } */
   8     return ptr + i;
   9   else
  10     return end;
  11 }
  12