gcc/testsuite/gcc.dg/pr51683.c

   1 /* PR tree-optimization/51683 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4
   5 static inline void *
   6 bar (void *p, void *q, int r)
   7 {
   8   return __builtin_memcpy (p, q, r);
   9 }
  10
  11 void *
  12 foo (void *p)
  13 {
  14   return bar ((void *) 0x12345000, p, 256);
  15   /* Integers converted to pointers are assumed to be the result of
  16      (invalid) arithmetic on null pointers.
  17      { dg-prune-output "writing 256 bytes into a region of size 0" } */
  18 }
  19
  20 /* { dg-final { scan-tree-dump "memcpy" "optimized" } } */