gcc/testsuite/gcc.dg/Warray-bounds-25.c

   1 /* PR tree-optimization/83446 - Bootstrap failed on i686
   2    { dg-do compile }
   3    { dg-options "-O2 -Warray-bounds" } */
   4
   5 char a[4];
   6
   7 void f0i (void *d, int n)
   8 {
   9   if (n < 0) n = 0;
  10
  11   __builtin_memcpy (d, a + sizeof a - n, n);
  12 }
  13
  14 void f0L (void *d, long n)
  15 {
  16   if (n < 0) n = 0;
  17
  18   __builtin_memcpy (d, a + sizeof a - n, n);
  19 }
  20
  21 void f0u (void *d, unsigned n)
  22 {
  23   if (n < 0) n = 1;
  24
  25   __builtin_memcpy (d, a + sizeof a - n, n);   /* { dg-bogus "\\\[-Warray-bounds" } */
  26 }
  27
  28 void f1lu (void *d, unsigned long n)
  29 {
  30   if (n < 1) n = 1;
  31
  32   __builtin_memcpy (d, a + sizeof a - n, n);   /* { dg-bogus "\\\[-Warray-bounds" } */
  33 }