gcc/testsuite/gcc.dg/pr51721.c

   1 /* PR tree-optimization/51721 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -Warray-bounds" } */
   4
   5 static int a[10], b[10], c[10], d[10];
   6
   7 unsigned int
   8 f (unsigned int v)
   9 {
  10   return v == 17 ? 11 : v;
  11 }
  12
  13 unsigned int
  14 g (unsigned int v)
  15 {
  16   return v == 17 ? 17 : v;
  17 }
  18
  19 void
  20 t (unsigned int s)
  21 {
  22   if (s >> 1 == 0)
  23     {
  24       a[f (s)] = 0;     /* { dg-bogus "array subscript is above array bounds" } */
  25       a[f (s)] = 0;     /* { dg-bogus "array subscript is above array bounds" } */
  26       b[f (s)] = 0;     /* { dg-bogus "array subscript is above array bounds" } */
  27       c[g (s)] = 0;     /* { dg-bogus "array subscript is above array bounds" } */
  28       c[g (s)] = 0;     /* { dg-bogus "array subscript is above array bounds" } */
  29       d[f (s)] = 0;     /* { dg-bogus "array subscript is above array bounds" } */
  30     }
  31 }