gcc/testsuite/gcc.dg/c99-stdint-1.c

   1 /* Verify that <stdint.h> is present and follows the C99 requirements.
   2    If this test fails because of the header being missing on a
   3    particular target, this indicates GCC has not been correctly
   4    configured regarding what version of <stdint.h> to install or what
   5    the <stdint.h> types are on that target.  If GCC is wrapping a
   6    system copy of the header and some tests fail because of bugs in
   7    that copy, they should be fixed with fixincludes (and the bugs
   8    reported to maintainer of that copy if still present in the latest
   9    version).  */
  10 /* { dg-do compile } */
  11 /* { dg-options "-std=iso9899:1999 -pedantic-errors -fhosted" } */
  12
  13 #include <limits.h>
  14 #include <stdint.h>
  15 /* This and the later SIG_ATOMIC_* tests should be appropriately
  16    conditioned for any freestanding targets with no <signal.h>.  */
  17 #ifndef SIGNAL_SUPPRESS
  18 #include <signal.h>
  19 #endif
  20
  21 /* Note that some of these conditions assume two's complement and no
  22    padding bits; GCC only supports two's complement, and no supported
  23    target has padding bits in any integer type of the standard
  24    widths.  */
  25 #define CHECK_SIGNED(TYPE) \
  26   do { TYPE a; int b[(TYPE)-1 < 0 ? 1 : -1]; } while (0)
  27 #define CHECK_UNSIGNED(TYPE) \
  28   do { TYPE a; int b[(TYPE)-1 < 0 ? -1 : 1]; } while (0)
  29 #define CHECK_WIDTH_EQUALS(TYPE, WIDTH) \
  30   do { int a[sizeof(TYPE) * CHAR_BIT == (WIDTH) ? 1 : -1]; } while (0)
  31 #define CHECK_WIDTH_AT_LEAST(TYPE, WIDTH) \
  32   do { int a[sizeof(TYPE) * CHAR_BIT >= (WIDTH) ? 1 : -1]; } while (0)
  33 #define CHECK_WIDTH_ORDER(TYPE1, TYPE2) \
  34   do { int a[sizeof(TYPE2) >= sizeof(TYPE1) ? 1 : -1]; } while (0)
  35 #define CHECK_EXPR_TYPE(TYPE, EXPR) \
  36   do { __typeof__(EXPR) a; __typeof__((TYPE)0 + 0) *b = &a; } while (0)
  37 #define UNSIGNED_MAX_COND(TYPE, EXPR) \
  38   ((EXPR) == (TYPE)-1)
  39 #define SIGNED_MIN_MAX_COND(TYPE, MIN, MAX)                             \
  40   ((MIN) == -(MAX)-1                                                    \
  41    && ((MAX) & 1)                                                       \
  42    && ((((MAX) >> 1) + 1) >> (sizeof(TYPE) * CHAR_BIT - 2)) == 1)
  43 #define MIN_MAX_COND(TYPE, MIN, MAX)                    \
  44   ((TYPE)-1 < 0                                         \
  45    ? SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX))            \
  46    : ((MIN) == 0 && UNSIGNED_MAX_COND(TYPE, (MAX))))
  47 #define CHECK_SIGNED_LIMITS(TYPE, MIN, MAX)                             \
  48   CHECK_SIGNED(TYPE);                                                   \
  49   CHECK_EXPR_TYPE(TYPE, (MIN));                                         \
  50   CHECK_EXPR_TYPE(TYPE, (MAX));                                         \
  51   do { int a[SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX)) ? 1 : -1]; } while (0)
  52 #define CHECK_SIGNED_LIMITS_2(TYPE, MIN, MAX, MINBD, MAXBD)     \
  53   CHECK_SIGNED(TYPE);                                           \
  54   CHECK_EXPR_TYPE(TYPE, (MIN));                                 \
  55   CHECK_EXPR_TYPE(TYPE, (MAX));                                 \
  56   do { int a[(SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX))           \
  57               && (MIN) <= (MINBD)                               \
  58               && (MAX) >= (MAXBD)) ? 1 : -1]; } while (0)
  59 #define CHECK_UNSIGNED_LIMITS(TYPE, MAX)                                \
  60   CHECK_UNSIGNED(TYPE);                                                 \
  61   CHECK_EXPR_TYPE(TYPE, (MAX));                                         \
  62   do { int a[UNSIGNED_MAX_COND(TYPE, (MAX)) ? 1 : -1]; } while (0)
  63 #define CHECK_UNSIGNED_LIMITS_2(TYPE, MAX, MAXBD)               \
  64   CHECK_UNSIGNED(TYPE);                                         \
  65   CHECK_EXPR_TYPE(TYPE, (MAX));                                 \
  66   do { int a[(UNSIGNED_MAX_COND(TYPE, (MAX))                    \
  67               && (MAX) >= (MAXBD)) ? 1 : -1]; } while (0)
  68 #define CHECK_LIMITS_2(TYPE, MIN, MAX, SMINBD, SMAXBD, UMAXBD)  \
  69   do { int a[(MIN_MAX_COND(TYPE, (MIN), (MAX))                  \
  70               && ((TYPE)-1 < 0                                  \
  71                   ? ((MIN) <= (SMINBD) && (MAX) >= (SMAXBD))    \
  72                   : (MAX) >= (UMAXBD))) ? 1 : -1]; } while (0)
  73 #define CHECK_CONSTS(TYPE, MACRO)                               \
  74   CHECK_EXPR_TYPE(TYPE, MACRO(01));                             \
  75   CHECK_EXPR_TYPE(TYPE, MACRO(2));                              \
  76   CHECK_EXPR_TYPE(TYPE, MACRO(0x3));                            \
  77   do { int a[(MACRO(12) == 12                                   \
  78               && MACRO(012) == 012                              \
  79               && MACRO(0x12) == 0x12) ? 1 : -1]; } while (0);
  80
  81 void
  82 test_exact (void)
  83 {
  84 #ifdef INT8_MIN
  85   CHECK_WIDTH_EQUALS(int8_t, 8);
  86   CHECK_SIGNED_LIMITS(int8_t, INT8_MIN, INT8_MAX);
  87 #else
  88   CHECK_WIDTH_AT_LEAST(int_least8_t, 9);
  89 #endif
  90 #ifdef INT16_MIN
  91   CHECK_WIDTH_EQUALS(int16_t, 16);
  92   CHECK_SIGNED_LIMITS(int16_t, INT16_MIN, INT16_MAX);
  93 #else
  94   CHECK_WIDTH_AT_LEAST(int_least16_t, 17);
  95 #endif
  96 #ifdef INT32_MIN
  97   CHECK_WIDTH_EQUALS(int32_t, 32);
  98   CHECK_SIGNED_LIMITS(int32_t, INT32_MIN, INT32_MAX);
  99 #else
 100   CHECK_WIDTH_AT_LEAST(int_least32_t, 33);
 101 #endif
 102 #ifdef INT64_MIN
 103   CHECK_WIDTH_EQUALS(int64_t, 64);
 104   CHECK_SIGNED_LIMITS(int64_t, INT64_MIN, INT64_MAX);
 105 #else
 106   CHECK_WIDTH_AT_LEAST(int_least64_t, 65);
 107 #endif
 108 #ifdef UINT8_MAX
 109   CHECK_WIDTH_EQUALS(uint8_t, 8);
 110   CHECK_UNSIGNED_LIMITS(uint8_t, UINT8_MAX);
 111 #else
 112   CHECK_WIDTH_AT_LEAST(uint_least8_t, 9);
 113 #endif
 114 #ifdef UINT16_MAX
 115   CHECK_WIDTH_EQUALS(uint16_t, 16);
 116   CHECK_UNSIGNED_LIMITS(uint16_t, UINT16_MAX);
 117 #else
 118   CHECK_WIDTH_AT_LEAST(uint_least16_t, 17);
 119 #endif
 120 #ifdef UINT32_MAX
 121   CHECK_WIDTH_EQUALS(uint32_t, 32);
 122   CHECK_UNSIGNED_LIMITS(uint32_t, UINT32_MAX);
 123 #else
 124   CHECK_WIDTH_AT_LEAST(uint_least32_t, 33);
 125 #endif
 126 #ifdef UINT64_MAX
 127   CHECK_WIDTH_EQUALS(uint64_t, 64);
 128   CHECK_UNSIGNED_LIMITS(uint64_t, UINT64_MAX);
 129 #else
 130   CHECK_WIDTH_AT_LEAST(uint_least64_t, 65);
 131 #endif
 132 }
 133
 134 void
 135 test_least (void)
 136 {
 137   CHECK_WIDTH_AT_LEAST(int_least8_t, 8);
 138   CHECK_WIDTH_ORDER(int_least8_t, int_fast8_t);
 139   CHECK_SIGNED_LIMITS(int_least8_t, INT_LEAST8_MIN, INT_LEAST8_MAX);
 140   CHECK_WIDTH_AT_LEAST(int_least16_t, 16);
 141   CHECK_WIDTH_ORDER(int_least16_t, int_fast16_t);
 142   CHECK_SIGNED_LIMITS(int_least16_t, INT_LEAST16_MIN, INT_LEAST16_MAX);
 143   CHECK_WIDTH_AT_LEAST(int_least32_t, 32);
 144   CHECK_WIDTH_ORDER(int_least32_t, int_fast32_t);
 145   CHECK_SIGNED_LIMITS(int_least32_t, INT_LEAST32_MIN, INT_LEAST32_MAX);
 146   CHECK_WIDTH_AT_LEAST(int_least64_t, 64);
 147   CHECK_WIDTH_ORDER(int_least64_t, int_fast64_t);
 148   CHECK_SIGNED_LIMITS(int_least64_t, INT_LEAST64_MIN, INT_LEAST64_MAX);
 149   CHECK_WIDTH_AT_LEAST(uint_least8_t, 8);
 150   CHECK_WIDTH_ORDER(uint_least8_t, uint_fast8_t);
 151   CHECK_UNSIGNED_LIMITS(uint_least8_t, UINT_LEAST8_MAX);
 152   CHECK_WIDTH_AT_LEAST(uint_least16_t, 16);
 153   CHECK_WIDTH_ORDER(uint_least16_t, uint_fast16_t);
 154   CHECK_UNSIGNED_LIMITS(uint_least16_t, UINT_LEAST16_MAX);
 155   CHECK_WIDTH_AT_LEAST(uint_least32_t, 32);
 156   CHECK_WIDTH_ORDER(uint_least32_t, uint_fast32_t);
 157   CHECK_UNSIGNED_LIMITS(uint_least32_t, UINT_LEAST32_MAX);
 158   CHECK_WIDTH_AT_LEAST(uint_least64_t, 64);
 159   CHECK_WIDTH_ORDER(uint_least64_t, uint_fast64_t);
 160   CHECK_UNSIGNED_LIMITS(uint_least64_t, UINT_LEAST64_MAX);
 161 }
 162
 163 void
 164 test_fast (void)
 165 {
 166   CHECK_WIDTH_AT_LEAST(int_fast8_t, 8);
 167   CHECK_SIGNED_LIMITS(int_fast8_t, INT_FAST8_MIN, INT_FAST8_MAX);
 168   CHECK_WIDTH_AT_LEAST(int_fast16_t, 16);
 169   CHECK_SIGNED_LIMITS(int_fast16_t, INT_FAST16_MIN, INT_FAST16_MAX);
 170   CHECK_WIDTH_AT_LEAST(int_fast32_t, 32);
 171   CHECK_SIGNED_LIMITS(int_fast32_t, INT_FAST32_MIN, INT_FAST32_MAX);
 172   CHECK_WIDTH_AT_LEAST(int_fast64_t, 64);
 173   CHECK_SIGNED_LIMITS(int_fast64_t, INT_FAST64_MIN, INT_FAST64_MAX);
 174   CHECK_WIDTH_AT_LEAST(uint_fast8_t, 8);
 175   CHECK_UNSIGNED_LIMITS(uint_fast8_t, UINT_FAST8_MAX);
 176   CHECK_WIDTH_AT_LEAST(uint_fast16_t, 16);
 177   CHECK_UNSIGNED_LIMITS(uint_fast16_t, UINT_FAST16_MAX);
 178   CHECK_WIDTH_AT_LEAST(uint_fast32_t, 32);
 179   CHECK_UNSIGNED_LIMITS(uint_fast32_t, UINT_FAST32_MAX);
 180   CHECK_WIDTH_AT_LEAST(uint_fast64_t, 64);
 181   CHECK_UNSIGNED_LIMITS(uint_fast64_t, UINT_FAST64_MAX);
 182 }
 183
 184 void
 185 test_ptr (void)
 186 {
 187 #ifdef INTPTR_MIN
 188   CHECK_SIGNED_LIMITS_2(intptr_t, INTPTR_MIN, INTPTR_MAX, -0x7fff, 0x7fff);
 189 #endif
 190 #ifdef UINTPTR_MAX
 191   CHECK_UNSIGNED_LIMITS_2(uintptr_t, UINTPTR_MAX, 0xffffU);
 192 #endif
 193 }
 194
 195 void
 196 test_max (void)
 197 {
 198   CHECK_WIDTH_AT_LEAST(intmax_t, 64);
 199   CHECK_WIDTH_ORDER(long long, intmax_t);
 200   CHECK_WIDTH_ORDER(int_fast8_t, intmax_t);
 201   CHECK_WIDTH_ORDER(int_fast16_t, intmax_t);
 202   CHECK_WIDTH_ORDER(int_fast32_t, intmax_t);
 203   CHECK_WIDTH_ORDER(int_fast64_t, intmax_t);
 204   CHECK_SIGNED_LIMITS(intmax_t, INTMAX_MIN, INTMAX_MAX);
 205   CHECK_WIDTH_AT_LEAST(uintmax_t, 64);
 206   CHECK_WIDTH_ORDER(unsigned long long, uintmax_t);
 207   CHECK_WIDTH_ORDER(uint_fast8_t, uintmax_t);
 208   CHECK_WIDTH_ORDER(uint_fast16_t, uintmax_t);
 209   CHECK_WIDTH_ORDER(uint_fast32_t, uintmax_t);
 210   CHECK_WIDTH_ORDER(uint_fast64_t, uintmax_t);
 211   CHECK_UNSIGNED_LIMITS(uintmax_t, UINTMAX_MAX);
 212 }
 213
 214 void
 215 test_misc_limits (void)
 216 {
 217 /* { dg-bogus  "size" "ptrdiff is 16bits" { xfail avr-*-* } 218 } */
 218   CHECK_SIGNED_LIMITS_2(__PTRDIFF_TYPE__, PTRDIFF_MIN, PTRDIFF_MAX, -65535L, 65535L);
 219 #ifndef SIGNAL_SUPPRESS
 220   CHECK_LIMITS_2(sig_atomic_t, SIG_ATOMIC_MIN, SIG_ATOMIC_MAX, -127, 127, 255);
 221 #endif
 222   CHECK_UNSIGNED_LIMITS_2(__SIZE_TYPE__, SIZE_MAX, 65535U);
 223   CHECK_LIMITS_2(__WCHAR_TYPE__, WCHAR_MIN, WCHAR_MAX, -127, 127, 255);
 224   CHECK_LIMITS_2(__WINT_TYPE__, WINT_MIN, WINT_MAX, -32767, 32767, 65535);
 225 }
 226
 227 void
 228 test_constants (void)
 229 {
 230   CHECK_CONSTS(int_least8_t, INT8_C);
 231   CHECK_CONSTS(int_least16_t, INT16_C);
 232   CHECK_CONSTS(int_least32_t, INT32_C);
 233   CHECK_CONSTS(int_least64_t, INT64_C);
 234   CHECK_CONSTS(intmax_t, INTMAX_C);
 235   CHECK_CONSTS(uint_least8_t, UINT8_C);
 236   CHECK_CONSTS(uint_least16_t, UINT16_C);
 237   CHECK_CONSTS(uint_least32_t, UINT32_C);
 238   CHECK_CONSTS(uint_least64_t, UINT64_C);
 239   CHECK_CONSTS(uintmax_t, UINTMAX_C);
 240 #if INT8_C(12) != 12
 241 #error "INT8_C not usable in #if"
 242 #endif
 243 #if INT16_C(12) != 12
 244 #error "INT16_C not usable in #if"
 245 #endif
 246 #if INT32_C(12) != 12
 247 #error "INT32_C not usable in #if"
 248 #endif
 249 #if INT64_C(12) != 12
 250 #error "INT64_C not usable in #if"
 251 #endif
 252 #if INTMAX_C(12) != 12
 253 #error "INTMAX_C not usable in #if"
 254 #endif
 255 #if UINT8_C(12) != 12
 256 #error "UINT8_C not usable in #if"
 257 #endif
 258 #if UINT16_C(12) != 12
 259 #error "UINT16_C not usable in #if"
 260 #endif
 261 #if UINT32_C(12) != 12
 262 #error "UINT32_C not usable in #if"
 263 #endif
 264 #if UINT64_C(12) != 12
 265 #error "UINT64_C not usable in #if"
 266 #endif
 267 #if UINTMAX_C(12) != 12
 268 #error "UINTMAX_C not usable in #if"
 269 #endif
 270 }