gcc/testsuite/gcc.dg/Wbuiltin-declaration-mismatch-13.c

   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 }