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/* { dg-do run } */

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

#include "strlenopt.h"

__attribute__((noinline, noclone)) char *

foo (char *p, const char *q)

{

  char *e = strchr (p, '\0');

  strcat (p, q);

  return e;

}

__attribute__((noinline, noclone)) char *

bar (char *p)

{

  memcpy (p, "abcd", 5);

  return strchr (p, '\0');

}

__attribute__((noinline, noclone)) void

baz (char *p)

{

  char *e = strchr (p, '\0');

  strcat (e, "abcd");

}

char buf[64];

int

main ()

{

  char *volatile p = buf;

  const char *volatile q = "ij";

  memset (buf, 'v', 3);

  if (foo (p, q) != buf + 3

      || memcmp (buf, "vvvij\0\0\0\0", 10) != 0)

    abort ();

  memset (buf, '\0', sizeof buf);

  if (bar (p) != buf + 4

      || memcmp (buf, "abcd\0\0\0\0\0", 10) != 0)

    abort ();

  memset (buf, 'v', 2);

  memset (buf + 2, '\0', -2 + sizeof buf);

  baz (p);

  if (memcmp (buf, "vvabcd\0\0\0", 10) != 0)

    abort ();

  return 0;

}

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

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

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

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

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

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

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