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/* This test needs runtime that provides stpcpy function.  */

/* { dg-do run { target *-*-linux* } } */

/* { dg-options "-O2 -fdump-tree-strlen" } */

#define USE_GNU

#include "strlenopt.h"

__attribute__((noinline, noclone)) int

foo (const char *p)

{

  static int c;

  const char *q[] = { "123498765abcde", "123498765..", "129abcde", "129abcde" };

  if (strcmp (p, q[c]) != 0)

    abort ();

  return c++;

}

__attribute__((noinline, noclone)) void

bar (const char *p, const char *q)

{

  size_t l;

  /* This strlen stays.  */

  char *a = __builtin_alloca (strlen (p) + 50);

  /* strcpy can be optimized into memcpy.  */

  strcpy (a, p);

  /* strcat into stpcpy.  */

  strcat (a, q);

  /* This strlen can be optimized away.  */

  l = strlen (a);

  /* This becomes memcpy.  */

  strcat (a, "abcde");

  if (!foo (a))

    /* And this one too.  */

    strcpy (a + l, "..");

  foo (a);

}

int

main ()

{

  const char *volatile s1 = "1234";

  const char *volatile s2 = "98765";

  const char *volatile s3 = "12";

  const char *volatile s4 = "9";

  bar (s1, s2);

  bar (s3, s4);

  return 0;

}

/* { dg-final { scan-tree-dump-times "strlen \\(" 1 "strlen" } } */

/* { dg-final { scan-tree-dump-times "memcpy \\(" 3 "strlen" } } */

/* { dg-final { scan-tree-dump-times "mempcpy \\(" 0 "strlen" } } */

/* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen" } } */

/* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */

/* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */

/* { dg-final { scan-tree-dump-times "stpcpy \\(" 1 "strlen" } } */

/* { dg-final { cleanup-tree-dump "strlen" } } */