gcc/testsuite/gcc.dg/pr45991.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fstrict-overflow" } */
   3
   4 struct S
   5 {
   6   int i;
   7 };
   8
   9 char A[64];
  10
  11 void foo (char **dst, int i)
  12 {
  13   char *p = A + 16;
  14   while (i--)
  15     {
  16       int b = ((struct S *) (&p[i * 16 + 4]))->i;
  17       char *c = A + i * 16;
  18       dst[i] = c + b;
  19     }
  20 }