gcc/testsuite/gcc.dg/pr55838.c

   1 /* PR rtl-optimization/55838 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -funroll-loops" } */
   4
   5 int a;
   6 unsigned char c;
   7
   8 void
   9 f (void)
  10 {
  11   while (c++ < 2)
  12     c = a += 129;
  13 }