gcc/testsuite/gcc.dg/tree-ssa/strncpy-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-optimized" } */
   3
   4 void sink (void*);
   5
   6 void f (const char *s)
   7 {
   8   char a[256];
   9
  10   __builtin_memset (a, 0, sizeof a);   // redundant memset
  11   __builtin_strncpy (a, s, sizeof a);
  12
  13   sink (a);
  14 }
  15
  16 /* { dg-final { scan-tree-dump-not "memset" "optimized" } } */