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/* { dg-do compile } */

/* { dg-options "-O2" } */

typedef __SIZE_TYPE__ size_t;

extern void warn_memset_zero_len (void)

__attribute__((__warning__ ("memset used with constant zero length parameter;"

                            " this could be due to transposed parameters")));

extern inline __attribute__((gnu_inline, always_inline, artificial)) void *

memset (void *dest, int ch, size_t len)

{

  if (__builtin_constant_p (len) && len == 0)

    {

      warn_memset_zero_len ();  /* { dg-warning "memset used with constant zero" } */

      return dest;

    }

  return __builtin_memset (dest, ch, len);

}

char buf[10];

int

main (void)

{

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

  return 0;

}