1  /* PR middle-end/93926 - ICE on a built-in redeclaration returning an integer
       2     instead of a pointer
       3     { dg-do compile }
       4     { dg-options "-Wall" } */
       5  
       6  typedef __SIZE_TYPE__ size_t;
       7  
       8  void* ret_calloc (size_t n1, size_t n2)
       9  {
      10    extern size_t calloc (size_t, size_t);    // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      11  
      12    return (void *) calloc (n1, n2);
      13  }
      14  
      15  void* ret_malloc (size_t n)
      16  {
      17    extern size_t malloc (size_t);            // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      18  
      19    return (void *) malloc (n);
      20  }
      21  
      22  void* ret_realloc (void *p, size_t n)
      23  {
      24    extern size_t realloc (void *p, size_t);  // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      25  
      26    return (void *) realloc (p, n);
      27  }
      28  
      29  void* ret_strdup (const char *s)
      30  {
      31    extern size_t strdup (const char*);       // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      32  
      33    return (void *) strdup (s);
      34  }
      35  
      36  void* ret_strndup (const char *s, size_t n)
      37  {
      38    extern size_t
      39      strndup (const char*, size_t);          // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      40  
      41    return (void *) strndup (s, n);
      42  }
      43  
      44  // For good measure also exerise strcmp return type (not part of the bug).
      45  
      46  char* ret_strcmp (const char *s, const char *t)
      47  {
      48    extern char*
      49      strcmp (const char*, const char*);      // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      50  
      51    return strcmp (s, t);
      52  }
      53  
      54  // Exercise warnings for pointer/integer mismatches in argument types
      55  // (also not part of the bug).
      56  
      57  char* ret_strcat (size_t s, const char *t)
      58  {
      59    extern char*
      60      strcat (size_t, const char*);           // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      61  
      62    return strcat (s, t);
      63  }
      64  
      65  char* ret_strcpy (char *s, size_t t)
      66  {
      67    extern char* strcpy (char*, size_t);      // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      68  
      69    return strcpy (s, t);
      70  }
      71  
      72  char* ret_strncpy (char *s, const char *t, size_t n)
      73  {
      74    extern char*
      75      strncpy (char*, size_t, const char*);   // { dg-warning "\\\[-Wbuiltin-declaration-mismatch" }
      76  
      77    return strncpy (s, n, t);
      78  }