view gcc/testsuite/gcc.dg/pr83373.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 84e7813d76e9
children
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/* PR middle-end/83373 - False positive reported by -Wstringop-overflow
   { dg-do compile }
   { dg-options "-O2 -Wstringop-overflow" }  */

typedef __SIZE_TYPE__ size_t;

char buf[100];

void get_data (char*);

__attribute__ ((nonnull(1, 2)))
inline char* my_strcpy (char* dst, const char* src, size_t size)
{
  size_t len = __builtin_strlen (src);
  if (len < size)
    __builtin_memcpy (dst, src, len + 1);
  else
    {
      __builtin_memcpy (dst, src, size - 1); /* { dg-bogus "\\\[-Wstringop-oveflow]" } */
      dst[size - 1] = '\0';
    }

  return dst;
}

void test(void)
{
  char data[20] = "12345";

  get_data (data);

  my_strcpy (buf, data, sizeof buf);
}