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/* { dg-do run } */

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

#include "strlenopt.h"

__attribute__((noinline, noclone)) size_t

fn1 (char *p, char *q)

{

  size_t s = strlen (q);

  strcpy (p, q);

  return s - strlen (p);

}

__attribute__((noinline, noclone)) size_t

fn2 (char *p, char *q)

{

  size_t s = strlen (q);

  memcpy (p, q, s + 1);

  return s - strlen (p);

}

__attribute__((noinline, noclone)) size_t

fn3 (char *p)

{

  memcpy (p, "abcd", 5);

  return strlen (p);

}

__attribute__((noinline, noclone)) size_t

fn4 (char *p)

{

  memcpy (p, "efg\0hij", 6);

  return strlen (p);

}

int

main ()

{

  char buf[64];

  char *volatile p = buf;

  char *volatile q = "ABCDEF";

  buf[7] = 'G';

  if (fn1 (p, q) != 0 || memcmp (buf, "ABCDEF\0G", 8))

    abort ();

  q = "HIJ";

  if (fn2 (p + 1, q) != 0 || memcmp (buf, "AHIJ\0F\0G", 8))

    abort ();

  buf[6] = 'K';

  if (fn3 (p + 1) != 4 || memcmp (buf, "Aabcd\0KG", 8))

    abort ();

  if (fn4 (p) != 3 || memcmp (buf, "efg\0hiKG", 8))

    abort ();

  return 0;

}

/* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen" } } */

/* { dg-final { scan-tree-dump-times "memcpy \\(" 4 "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 \\(" 0 "strlen" } } */

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

/* { dg-final { scan-tree-dump-times "return 0" 3 "optimized" } } */

/* { dg-final { scan-tree-dump-times "return 4" 1 "optimized" } } */

/* { dg-final { scan-tree-dump-times "return 3" 1 "optimized" } } */

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