gcc/testsuite/c-c++-common/builtins.c

   1 /* Test to verify that calls to common built-in functions declared
   2    with no prototype do not cause an ICE.
   3   { dg-do compile }
   4   { dg-options "-O2 -Wall -Wextra" }
   5   { dg-additional-options "-fpermissive" { target c } }
   6   { dg-prune-output "warning" }
   7   { dg-require-effective-target alloca }  */
   8
   9 typedef __SIZE_TYPE__ size_t;
  10
  11 #if __cplusplus
  12 extern "C" {
  13
  14 #define NO_PROTO ...
  15 #else
  16 #define NO_PROTO /* empty */
  17 #endif
  18
  19   /* Character classification built-ins from <ctype.h>.  */
  20   int isalpha (NO_PROTO);
  21   int isalnum (NO_PROTO);
  22   int isalpha (NO_PROTO);
  23   int iscntrl (NO_PROTO);
  24   int isdigit (NO_PROTO);
  25   int isgraph (NO_PROTO);
  26   int islower (NO_PROTO);
  27   int isprint (NO_PROTO);
  28   int ispunct (NO_PROTO);
  29   int isspace (NO_PROTO);
  30   int isupper (NO_PROTO);
  31   int isxdigit (NO_PROTO);
  32   int tolower (NO_PROTO);
  33   int toupper (NO_PROTO);
  34
  35   /* Memory allocation built-ins from <stdlib.h>.  */
  36   void* alloca (NO_PROTO);
  37   void* aligned_alloc (NO_PROTO);
  38   void* calloc (NO_PROTO);
  39   void* malloc (NO_PROTO);
  40   void* realloc (NO_PROTO);
  41
  42   /* Raw memory built-ins from <string.h>.  */
  43   void* memcpy (NO_PROTO);
  44   void* memchr (NO_PROTO);
  45   void* memmove (NO_PROTO);
  46   void* mempcpy (NO_PROTO);
  47   void* memset (NO_PROTO);
  48
  49   /* String built-ins from <string.h>.  */
  50   char* stpcpy (NO_PROTO);
  51   char* stpncpy (NO_PROTO);
  52
  53   char* strcat (NO_PROTO);
  54   char* strcpy (NO_PROTO);
  55
  56   char* strdup (NO_PROTO);
  57   char* strndup (NO_PROTO);
  58
  59   char* strncat (NO_PROTO);
  60   char* strncpy (NO_PROTO);
  61
  62   size_t strlen (NO_PROTO);
  63   size_t strnlen (NO_PROTO);
  64
  65   char* strchr (NO_PROTO);
  66   int strcmp (NO_PROTO);
  67   int strncmp (NO_PROTO);
  68
  69   /* Input/output functions from <stdio.h>.  */
  70   int puts (NO_PROTO);
  71   int fputs (NO_PROTO);
  72
  73   int scanf (NO_PROTO);
  74   int fscanf (NO_PROTO);
  75   int sscanf (NO_PROTO);
  76   int vfscanf (NO_PROTO);
  77   int vsscanf (NO_PROTO);
  78
  79   int printf (NO_PROTO);
  80   int fprintf (NO_PROTO);
  81   int sprintf (NO_PROTO);
  82
  83   int snprintf (NO_PROTO);
  84
  85   int vprintf (NO_PROTO);
  86   int vfprintf (NO_PROTO);
  87   int vsprintf (NO_PROTO);
  88
  89   int vsnprintf (NO_PROTO);
  90
  91 #if __cplusplus
  92 }
  93 #endif
  94
  95
  96 #define CONCAT(a, b) a ## b
  97 #define UNIQ_NAME(func, id) CONCAT (test_ ## func ## _, id)
  98
  99 #define TEST_FUNC(func, arglist)                \
 100   __typeof__ (func arglist)                     \
 101   UNIQ_NAME (func, __COUNTER__) (void) {        \
 102     return func arglist;                        \
 103   }
 104
 105 #define T1(func)                                \
 106   TEST_FUNC (func, ());                         \
 107   TEST_FUNC (func, (1));                        \
 108   TEST_FUNC (func, (""));                       \
 109   TEST_FUNC (func, ((void*)1));                 \
 110   TEST_FUNC (func, (iarr));                     \
 111   TEST_FUNC (func, (function))
 112
 113 #define T2(func)                                \
 114   TEST_FUNC (func, (1, 1));                     \
 115   TEST_FUNC (func, (1, ""));                    \
 116   TEST_FUNC (func, (1, (void*)1));              \
 117   TEST_FUNC (func, (1, iarr));                  \
 118   TEST_FUNC (func, (1, function))
 119
 120 #define T3(func)                                \
 121   TEST_FUNC (func, (1, 1, 1));                  \
 122   TEST_FUNC (func, (1, 1, ""));                 \
 123   TEST_FUNC (func, (1, 1, (void*)1));           \
 124   TEST_FUNC (func, (1, 1, iarr));               \
 125   TEST_FUNC (func, (1, 1, function))
 126
 127 extern int iarr[];
 128 extern void function (void);
 129
 130 T1 (isalpha);
 131 T1 (isalnum);
 132 T1 (isalpha);
 133 T1 (iscntrl);
 134 T1 (isdigit);
 135 T1 (isgraph);
 136 T1 (islower);
 137 T1 (isprint);
 138 T1 (ispunct);
 139 T1 (isspace);
 140 T1 (isupper);
 141 T1 (isxdigit);
 142 T1 (tolower);
 143 T1 (toupper);
 144
 145 T1 (alloca);
 146 T2 (aligned_alloc);
 147 T2 (malloc);
 148 T2 (calloc);
 149 T2 (realloc);
 150
 151 T3 (memcpy);
 152 T3 (memmove);
 153 T3 (mempcpy);
 154 T3 (memset);
 155 T3 (memchr);
 156
 157 T2 (stpcpy);
 158 T3 (stpncpy);
 159
 160 T2 (strcat);
 161 T2 (strcpy);
 162
 163 T1 (strdup);
 164 T2 (strndup);
 165
 166 T3 (strncat);
 167 T3 (strncpy);
 168
 169 T2 (strchr);
 170 T2 (strcmp);
 171 T3 (strncmp);
 172
 173 T1 (strlen);
 174 T2 (strnlen);
 175
 176 T1 (puts);
 177 T2 (fputs);
 178
 179 T1 (scanf);
 180 T2 (fscanf);
 181 T2 (sscanf);
 182 T2 (vfscanf);
 183 T2 (vsscanf);
 184
 185 T2 (printf);
 186 T3 (fprintf);
 187 T3 (sprintf);
 188
 189 T3 (snprintf);
 190
 191 T2 (vprintf);
 192 T2 (vfprintf);
 193 T2 (vsprintf);
 194
 195 T3 (vsnprintf);