1  /* This test needs runtime that provides stpcpy function.  */
       2  /* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
       3  /* { dg-options "-O2 -fdump-tree-strlen" } */
       4  
       5  #define USE_GNU
       6  #include "strlenopt.h"
       7  
       8  __attribute__((noinline, noclone)) char *
       9  fn1 (char *p, const char *q)
      10  {
      11    /* This strcpy can be optimized into stpcpy.  */
      12    strcpy (p, q);
      13    /* And this strchr into the return value from it.  */
      14    return strchr (p, '\0');
      15  }
      16  
      17  int
      18  main ()
      19  {
      20    char buf[64];
      21    const char *volatile q = "ABCDEFGH";
      22    if (fn1 (buf, q) != buf + 8 || memcmp (buf, "ABCDEFGH", 9) != 0)
      23      abort ();
      24    return 0;
      25  }
      26  
      27  /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen1" } } */
      28  /* { dg-final { scan-tree-dump-times "memcpy \\(" 0 "strlen1" } } */
      29  /* { dg-final { scan-tree-dump-times "mempcpy \\(" 0 "strlen1" } } */
      30  /* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen1" } } */
      31  /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen1" } } */
      32  /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen1" } } */
      33  /* { dg-final { scan-tree-dump-times "stpcpy \\(" 1 "strlen1" } } */