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/* Verify that <stdint.h> is present and follows the C99 requirements.
If this test fails because of the header being missing on a
particular target, this indicates GCC has not been correctly
configured regarding what version of <stdint.h> to install or what
the <stdint.h> types are on that target. If GCC is wrapping a
system copy of the header and some tests fail because of bugs in
that copy, they should be fixed with fixincludes (and the bugs
reported to maintainer of that copy if still present in the latest
version). */
/* { dg-do compile } */
/* { dg-options "-std=iso9899:1999 -pedantic-errors -fhosted" } */
#include <limits.h>
#include <stdint.h>
/* This and the later SIG_ATOMIC_* tests should be appropriately
conditioned for any freestanding targets with no <signal.h>. */
#include <signal.h>
/* Note that some of these conditions assume two's complement and no
padding bits; GCC only supports two's complement, and no supported
target has padding bits in any integer type of the standard
widths. */
#define CHECK_SIGNED(TYPE) \
do { TYPE a; int b[(TYPE)-1 < 0 ? 1 : -1]; } while (0)
#define CHECK_UNSIGNED(TYPE) \
do { TYPE a; int b[(TYPE)-1 < 0 ? -1 : 1]; } while (0)
#define CHECK_WIDTH_EQUALS(TYPE, WIDTH) \
do { int a[sizeof(TYPE) * CHAR_BIT == (WIDTH) ? 1 : -1]; } while (0)
#define CHECK_WIDTH_AT_LEAST(TYPE, WIDTH) \
do { int a[sizeof(TYPE) * CHAR_BIT >= (WIDTH) ? 1 : -1]; } while (0)
#define CHECK_WIDTH_ORDER(TYPE1, TYPE2) \
do { int a[sizeof(TYPE2) >= sizeof(TYPE1) ? 1 : -1]; } while (0)
#define CHECK_EXPR_TYPE(TYPE, EXPR) \
do { __typeof__(EXPR) a; __typeof__((TYPE)0 + 0) *b = &a; } while (0)
#define UNSIGNED_MAX_COND(TYPE, EXPR) \
((EXPR) == (TYPE)-1)
#define SIGNED_MIN_MAX_COND(TYPE, MIN, MAX) \
((MIN) == -(MAX)-1 \
&& ((MAX) & 1) \
&& ((((MAX) >> 1) + 1) >> (sizeof(TYPE) * CHAR_BIT - 2)) == 1)
#define MIN_MAX_COND(TYPE, MIN, MAX) \
((TYPE)-1 < 0 \
? SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX)) \
: ((MIN) == 0 && UNSIGNED_MAX_COND(TYPE, (MAX))))
#define CHECK_SIGNED_LIMITS(TYPE, MIN, MAX) \
CHECK_SIGNED(TYPE); \
CHECK_EXPR_TYPE(TYPE, (MIN)); \
CHECK_EXPR_TYPE(TYPE, (MAX)); \
do { int a[SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX)) ? 1 : -1]; } while (0)
#define CHECK_SIGNED_LIMITS_2(TYPE, MIN, MAX, MINBD, MAXBD) \
CHECK_SIGNED(TYPE); \
CHECK_EXPR_TYPE(TYPE, (MIN)); \
CHECK_EXPR_TYPE(TYPE, (MAX)); \
do { int a[(SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX)) \
&& (MIN) <= (MINBD) \
&& (MAX) >= (MAXBD)) ? 1 : -1]; } while (0)
#define CHECK_UNSIGNED_LIMITS(TYPE, MAX) \
CHECK_UNSIGNED(TYPE); \
CHECK_EXPR_TYPE(TYPE, (MAX)); \
do { int a[UNSIGNED_MAX_COND(TYPE, (MAX)) ? 1 : -1]; } while (0)
#define CHECK_UNSIGNED_LIMITS_2(TYPE, MAX, MAXBD) \
CHECK_UNSIGNED(TYPE); \
CHECK_EXPR_TYPE(TYPE, (MAX)); \
do { int a[(UNSIGNED_MAX_COND(TYPE, (MAX)) \
&& (MAX) >= (MAXBD)) ? 1 : -1]; } while (0)
#define CHECK_LIMITS_2(TYPE, MIN, MAX, SMINBD, SMAXBD, UMAXBD) \
do { int a[(MIN_MAX_COND(TYPE, (MIN), (MAX)) \
&& ((TYPE)-1 < 0 \
? ((MIN) <= (SMINBD) && (MAX) >= (SMAXBD)) \
: (MAX) >= (UMAXBD))) ? 1 : -1]; } while (0)
#define CHECK_CONSTS(TYPE, MACRO) \
CHECK_EXPR_TYPE(TYPE, MACRO(01)); \
CHECK_EXPR_TYPE(TYPE, MACRO(2)); \
CHECK_EXPR_TYPE(TYPE, MACRO(0x3)); \
do { int a[(MACRO(12) == 12 \
&& MACRO(012) == 012 \
&& MACRO(0x12) == 0x12) ? 1 : -1]; } while (0);
void
test_exact (void)
{
#ifdef INT8_MIN
CHECK_WIDTH_EQUALS(int8_t, 8);
CHECK_SIGNED_LIMITS(int8_t, INT8_MIN, INT8_MAX);
#else
CHECK_WIDTH_AT_LEAST(int_least8_t, 9);
#endif
#ifdef INT16_MIN
CHECK_WIDTH_EQUALS(int16_t, 16);
CHECK_SIGNED_LIMITS(int16_t, INT16_MIN, INT16_MAX);
#else
CHECK_WIDTH_AT_LEAST(int_least16_t, 17);
#endif
#ifdef INT32_MIN
CHECK_WIDTH_EQUALS(int32_t, 32);
CHECK_SIGNED_LIMITS(int32_t, INT32_MIN, INT32_MAX);
#else
CHECK_WIDTH_AT_LEAST(int_least32_t, 33);
#endif
#ifdef INT64_MIN
CHECK_WIDTH_EQUALS(int64_t, 64);
CHECK_SIGNED_LIMITS(int64_t, INT64_MIN, INT64_MAX);
#else
CHECK_WIDTH_AT_LEAST(int_least64_t, 65);
#endif
#ifdef UINT8_MAX
CHECK_WIDTH_EQUALS(uint8_t, 8);
CHECK_UNSIGNED_LIMITS(uint8_t, UINT8_MAX);
#else
CHECK_WIDTH_AT_LEAST(uint_least8_t, 9);
#endif
#ifdef UINT16_MAX
CHECK_WIDTH_EQUALS(uint16_t, 16);
CHECK_UNSIGNED_LIMITS(uint16_t, UINT16_MAX);
#else
CHECK_WIDTH_AT_LEAST(uint_least16_t, 17);
#endif
#ifdef UINT32_MAX
CHECK_WIDTH_EQUALS(uint32_t, 32);
CHECK_UNSIGNED_LIMITS(uint32_t, UINT32_MAX);
#else
CHECK_WIDTH_AT_LEAST(uint_least32_t, 33);
#endif
#ifdef UINT64_MAX
CHECK_WIDTH_EQUALS(uint64_t, 64);
CHECK_UNSIGNED_LIMITS(uint64_t, UINT64_MAX);
#else
CHECK_WIDTH_AT_LEAST(uint_least64_t, 65);
#endif
}
void
test_least (void)
{
CHECK_WIDTH_AT_LEAST(int_least8_t, 8);
CHECK_WIDTH_ORDER(int_least8_t, int_fast8_t);
CHECK_SIGNED_LIMITS(int_least8_t, INT_LEAST8_MIN, INT_LEAST8_MAX);
CHECK_WIDTH_AT_LEAST(int_least16_t, 16);
CHECK_WIDTH_ORDER(int_least16_t, int_fast16_t);
CHECK_SIGNED_LIMITS(int_least16_t, INT_LEAST16_MIN, INT_LEAST16_MAX);
CHECK_WIDTH_AT_LEAST(int_least32_t, 32);
CHECK_WIDTH_ORDER(int_least32_t, int_fast32_t);
CHECK_SIGNED_LIMITS(int_least32_t, INT_LEAST32_MIN, INT_LEAST32_MAX);
CHECK_WIDTH_AT_LEAST(int_least64_t, 64);
CHECK_WIDTH_ORDER(int_least64_t, int_fast64_t);
CHECK_SIGNED_LIMITS(int_least64_t, INT_LEAST64_MIN, INT_LEAST64_MAX);
CHECK_WIDTH_AT_LEAST(uint_least8_t, 8);
CHECK_WIDTH_ORDER(uint_least8_t, uint_fast8_t);
CHECK_UNSIGNED_LIMITS(uint_least8_t, UINT_LEAST8_MAX);
CHECK_WIDTH_AT_LEAST(uint_least16_t, 16);
CHECK_WIDTH_ORDER(uint_least16_t, uint_fast16_t);
CHECK_UNSIGNED_LIMITS(uint_least16_t, UINT_LEAST16_MAX);
CHECK_WIDTH_AT_LEAST(uint_least32_t, 32);
CHECK_WIDTH_ORDER(uint_least32_t, uint_fast32_t);
CHECK_UNSIGNED_LIMITS(uint_least32_t, UINT_LEAST32_MAX);
CHECK_WIDTH_AT_LEAST(uint_least64_t, 64);
CHECK_WIDTH_ORDER(uint_least64_t, uint_fast64_t);
CHECK_UNSIGNED_LIMITS(uint_least64_t, UINT_LEAST64_MAX);
}
void
test_fast (void)
{
CHECK_WIDTH_AT_LEAST(int_fast8_t, 8);
CHECK_SIGNED_LIMITS(int_fast8_t, INT_FAST8_MIN, INT_FAST8_MAX);
CHECK_WIDTH_AT_LEAST(int_fast16_t, 16);
CHECK_SIGNED_LIMITS(int_fast16_t, INT_FAST16_MIN, INT_FAST16_MAX);
CHECK_WIDTH_AT_LEAST(int_fast32_t, 32);
CHECK_SIGNED_LIMITS(int_fast32_t, INT_FAST32_MIN, INT_FAST32_MAX);
CHECK_WIDTH_AT_LEAST(int_fast64_t, 64);
CHECK_SIGNED_LIMITS(int_fast64_t, INT_FAST64_MIN, INT_FAST64_MAX);
CHECK_WIDTH_AT_LEAST(uint_fast8_t, 8);
CHECK_UNSIGNED_LIMITS(uint_fast8_t, UINT_FAST8_MAX);
CHECK_WIDTH_AT_LEAST(uint_fast16_t, 16);
CHECK_UNSIGNED_LIMITS(uint_fast16_t, UINT_FAST16_MAX);
CHECK_WIDTH_AT_LEAST(uint_fast32_t, 32);
CHECK_UNSIGNED_LIMITS(uint_fast32_t, UINT_FAST32_MAX);
CHECK_WIDTH_AT_LEAST(uint_fast64_t, 64);
CHECK_UNSIGNED_LIMITS(uint_fast64_t, UINT_FAST64_MAX);
}
void
test_ptr (void)
{
#ifdef INTPTR_MIN
CHECK_SIGNED_LIMITS_2(intptr_t, INTPTR_MIN, INTPTR_MAX, -0x7fff, 0x7fff);
#endif
#ifdef UINTPTR_MAX
CHECK_UNSIGNED_LIMITS_2(uintptr_t, UINTPTR_MAX, 0xffffU);
#endif
}
void
test_max (void)
{
CHECK_WIDTH_AT_LEAST(intmax_t, 64);
CHECK_WIDTH_ORDER(long long, intmax_t);
CHECK_WIDTH_ORDER(int_fast8_t, intmax_t);
CHECK_WIDTH_ORDER(int_fast16_t, intmax_t);
CHECK_WIDTH_ORDER(int_fast32_t, intmax_t);
CHECK_WIDTH_ORDER(int_fast64_t, intmax_t);
CHECK_SIGNED_LIMITS(intmax_t, INTMAX_MIN, INTMAX_MAX);
CHECK_WIDTH_AT_LEAST(uintmax_t, 64);
CHECK_WIDTH_ORDER(unsigned long long, uintmax_t);
CHECK_WIDTH_ORDER(uint_fast8_t, uintmax_t);
CHECK_WIDTH_ORDER(uint_fast16_t, uintmax_t);
CHECK_WIDTH_ORDER(uint_fast32_t, uintmax_t);
CHECK_WIDTH_ORDER(uint_fast64_t, uintmax_t);
CHECK_UNSIGNED_LIMITS(uintmax_t, UINTMAX_MAX);
}
void
test_misc_limits (void)
{
CHECK_SIGNED_LIMITS_2(__PTRDIFF_TYPE__, PTRDIFF_MIN, PTRDIFF_MAX, -65535L, 65535L);
CHECK_LIMITS_2(sig_atomic_t, SIG_ATOMIC_MIN, SIG_ATOMIC_MAX, -127, 127, 255);
CHECK_UNSIGNED_LIMITS_2(__SIZE_TYPE__, SIZE_MAX, 65535U);
CHECK_LIMITS_2(__WCHAR_TYPE__, WCHAR_MIN, WCHAR_MAX, -127, 127, 255);
CHECK_LIMITS_2(__WINT_TYPE__, WINT_MIN, WINT_MAX, -32767, 32767, 65535);
}
void
test_constants (void)
{
CHECK_CONSTS(int_least8_t, INT8_C);
CHECK_CONSTS(int_least16_t, INT16_C);
CHECK_CONSTS(int_least32_t, INT32_C);
CHECK_CONSTS(int_least64_t, INT64_C);
CHECK_CONSTS(intmax_t, INTMAX_C);
CHECK_CONSTS(uint_least8_t, UINT8_C);
CHECK_CONSTS(uint_least16_t, UINT16_C);
CHECK_CONSTS(uint_least32_t, UINT32_C);
CHECK_CONSTS(uint_least64_t, UINT64_C);
CHECK_CONSTS(uintmax_t, UINTMAX_C);
#if INT8_C(12) != 12
#error "INT8_C not usable in #if"
#endif
#if INT16_C(12) != 12
#error "INT16_C not usable in #if"
#endif
#if INT32_C(12) != 12
#error "INT32_C not usable in #if"
#endif
#if INT64_C(12) != 12
#error "INT64_C not usable in #if"
#endif
#if INTMAX_C(12) != 12
#error "INTMAX_C not usable in #if"
#endif
#if UINT8_C(12) != 12
#error "UINT8_C not usable in #if"
#endif
#if UINT16_C(12) != 12
#error "UINT16_C not usable in #if"
#endif
#if UINT32_C(12) != 12
#error "UINT32_C not usable in #if"
#endif
#if UINT64_C(12) != 12
#error "UINT64_C not usable in #if"
#endif
#if UINTMAX_C(12) != 12
#error "UINTMAX_C not usable in #if"
#endif
}
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