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
10 /* { dg-do compile } */
11 /* { dg-options "-std=iso9899:1999 -pedantic-errors -fhosted" } */
15 /* This and the later SIG_ATOMIC_* tests should be appropriately
16 conditioned for any freestanding targets with no <signal.h>. */
19 /* Note that some of these conditions assume two's complement and no
20 padding bits; GCC only supports two's complement, and no supported
21 target has padding bits in any integer type of the standard
23 #define CHECK_SIGNED(TYPE) \
24 do { TYPE a; int b[(TYPE)-1 < 0 ? 1 : -1]; } while (0)
25 #define CHECK_UNSIGNED(TYPE) \
26 do { TYPE a; int b[(TYPE)-1 < 0 ? -1 : 1]; } while (0)
27 #define CHECK_WIDTH_EQUALS(TYPE, WIDTH) \
28 do { int a[sizeof(TYPE) * CHAR_BIT == (WIDTH) ? 1 : -1]; } while (0)
29 #define CHECK_WIDTH_AT_LEAST(TYPE, WIDTH) \
30 do { int a[sizeof(TYPE) * CHAR_BIT >= (WIDTH) ? 1 : -1]; } while (0)
31 #define CHECK_WIDTH_ORDER(TYPE1, TYPE2) \
32 do { int a[sizeof(TYPE2) >= sizeof(TYPE1) ? 1 : -1]; } while (0)
33 #define CHECK_EXPR_TYPE(TYPE, EXPR) \
34 do { __typeof__(EXPR) a; __typeof__((TYPE)0 + 0) *b = &a; } while (0)
35 #define UNSIGNED_MAX_COND(TYPE, EXPR) \
37 #define SIGNED_MIN_MAX_COND(TYPE, MIN, MAX) \
40 && ((((MAX) >> 1) + 1) >> (sizeof(TYPE) * CHAR_BIT - 2)) == 1)
41 #define MIN_MAX_COND(TYPE, MIN, MAX) \
43 ? SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX)) \
44 : ((MIN) == 0 && UNSIGNED_MAX_COND(TYPE, (MAX))))
45 #define CHECK_SIGNED_LIMITS(TYPE, MIN, MAX) \
47 CHECK_EXPR_TYPE(TYPE, (MIN)); \
48 CHECK_EXPR_TYPE(TYPE, (MAX)); \
49 do { int a[SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX)) ? 1 : -1]; } while (0)
50 #define CHECK_SIGNED_LIMITS_2(TYPE, MIN, MAX, MINBD, MAXBD) \
52 CHECK_EXPR_TYPE(TYPE, (MIN)); \
53 CHECK_EXPR_TYPE(TYPE, (MAX)); \
54 do { int a[(SIGNED_MIN_MAX_COND(TYPE, (MIN), (MAX)) \
56 && (MAX) >= (MAXBD)) ? 1 : -1]; } while (0)
57 #define CHECK_UNSIGNED_LIMITS(TYPE, MAX) \
58 CHECK_UNSIGNED(TYPE); \
59 CHECK_EXPR_TYPE(TYPE, (MAX)); \
60 do { int a[UNSIGNED_MAX_COND(TYPE, (MAX)) ? 1 : -1]; } while (0)
61 #define CHECK_UNSIGNED_LIMITS_2(TYPE, MAX, MAXBD) \
62 CHECK_UNSIGNED(TYPE); \
63 CHECK_EXPR_TYPE(TYPE, (MAX)); \
64 do { int a[(UNSIGNED_MAX_COND(TYPE, (MAX)) \
65 && (MAX) >= (MAXBD)) ? 1 : -1]; } while (0)
66 #define CHECK_LIMITS_2(TYPE, MIN, MAX, SMINBD, SMAXBD, UMAXBD) \
67 do { int a[(MIN_MAX_COND(TYPE, (MIN), (MAX)) \
69 ? ((MIN) <= (SMINBD) && (MAX) >= (SMAXBD)) \
70 : (MAX) >= (UMAXBD))) ? 1 : -1]; } while (0)
71 #define CHECK_CONSTS(TYPE, MACRO) \
72 CHECK_EXPR_TYPE(TYPE, MACRO(01)); \
73 CHECK_EXPR_TYPE(TYPE, MACRO(2)); \
74 CHECK_EXPR_TYPE(TYPE, MACRO(0x3)); \
75 do { int a[(MACRO(12) == 12 \
76 && MACRO(012) == 012 \
77 && MACRO(0x12) == 0x12) ? 1 : -1]; } while (0);
83 CHECK_WIDTH_EQUALS(int8_t, 8);
84 CHECK_SIGNED_LIMITS(int8_t, INT8_MIN, INT8_MAX);
86 CHECK_WIDTH_AT_LEAST(int_least8_t, 9);
89 CHECK_WIDTH_EQUALS(int16_t, 16);
90 CHECK_SIGNED_LIMITS(int16_t, INT16_MIN, INT16_MAX);
92 CHECK_WIDTH_AT_LEAST(int_least16_t, 17);
95 CHECK_WIDTH_EQUALS(int32_t, 32);
96 CHECK_SIGNED_LIMITS(int32_t, INT32_MIN, INT32_MAX);
98 CHECK_WIDTH_AT_LEAST(int_least32_t, 33);
101 CHECK_WIDTH_EQUALS(int64_t, 64);
102 CHECK_SIGNED_LIMITS(int64_t, INT64_MIN, INT64_MAX);
104 CHECK_WIDTH_AT_LEAST(int_least64_t, 65);
107 CHECK_WIDTH_EQUALS(uint8_t, 8);
108 CHECK_UNSIGNED_LIMITS(uint8_t, UINT8_MAX);
110 CHECK_WIDTH_AT_LEAST(uint_least8_t, 9);
113 CHECK_WIDTH_EQUALS(uint16_t, 16);
114 CHECK_UNSIGNED_LIMITS(uint16_t, UINT16_MAX);
116 CHECK_WIDTH_AT_LEAST(uint_least16_t, 17);
119 CHECK_WIDTH_EQUALS(uint32_t, 32);
120 CHECK_UNSIGNED_LIMITS(uint32_t, UINT32_MAX);
122 CHECK_WIDTH_AT_LEAST(uint_least32_t, 33);
125 CHECK_WIDTH_EQUALS(uint64_t, 64);
126 CHECK_UNSIGNED_LIMITS(uint64_t, UINT64_MAX);
128 CHECK_WIDTH_AT_LEAST(uint_least64_t, 65);
135 CHECK_WIDTH_AT_LEAST(int_least8_t, 8);
136 CHECK_WIDTH_ORDER(int_least8_t, int_fast8_t);
137 CHECK_SIGNED_LIMITS(int_least8_t, INT_LEAST8_MIN, INT_LEAST8_MAX);
138 CHECK_WIDTH_AT_LEAST(int_least16_t, 16);
139 CHECK_WIDTH_ORDER(int_least16_t, int_fast16_t);
140 CHECK_SIGNED_LIMITS(int_least16_t, INT_LEAST16_MIN, INT_LEAST16_MAX);
141 CHECK_WIDTH_AT_LEAST(int_least32_t, 32);
142 CHECK_WIDTH_ORDER(int_least32_t, int_fast32_t);
143 CHECK_SIGNED_LIMITS(int_least32_t, INT_LEAST32_MIN, INT_LEAST32_MAX);
144 CHECK_WIDTH_AT_LEAST(int_least64_t, 64);
145 CHECK_WIDTH_ORDER(int_least64_t, int_fast64_t);
146 CHECK_SIGNED_LIMITS(int_least64_t, INT_LEAST64_MIN, INT_LEAST64_MAX);
147 CHECK_WIDTH_AT_LEAST(uint_least8_t, 8);
148 CHECK_WIDTH_ORDER(uint_least8_t, uint_fast8_t);
149 CHECK_UNSIGNED_LIMITS(uint_least8_t, UINT_LEAST8_MAX);
150 CHECK_WIDTH_AT_LEAST(uint_least16_t, 16);
151 CHECK_WIDTH_ORDER(uint_least16_t, uint_fast16_t);
152 CHECK_UNSIGNED_LIMITS(uint_least16_t, UINT_LEAST16_MAX);
153 CHECK_WIDTH_AT_LEAST(uint_least32_t, 32);
154 CHECK_WIDTH_ORDER(uint_least32_t, uint_fast32_t);
155 CHECK_UNSIGNED_LIMITS(uint_least32_t, UINT_LEAST32_MAX);
156 CHECK_WIDTH_AT_LEAST(uint_least64_t, 64);
157 CHECK_WIDTH_ORDER(uint_least64_t, uint_fast64_t);
158 CHECK_UNSIGNED_LIMITS(uint_least64_t, UINT_LEAST64_MAX);
164 CHECK_WIDTH_AT_LEAST(int_fast8_t, 8);
165 CHECK_SIGNED_LIMITS(int_fast8_t, INT_FAST8_MIN, INT_FAST8_MAX);
166 CHECK_WIDTH_AT_LEAST(int_fast16_t, 16);
167 CHECK_SIGNED_LIMITS(int_fast16_t, INT_FAST16_MIN, INT_FAST16_MAX);
168 CHECK_WIDTH_AT_LEAST(int_fast32_t, 32);
169 CHECK_SIGNED_LIMITS(int_fast32_t, INT_FAST32_MIN, INT_FAST32_MAX);
170 CHECK_WIDTH_AT_LEAST(int_fast64_t, 64);
171 CHECK_SIGNED_LIMITS(int_fast64_t, INT_FAST64_MIN, INT_FAST64_MAX);
172 CHECK_WIDTH_AT_LEAST(uint_fast8_t, 8);
173 CHECK_UNSIGNED_LIMITS(uint_fast8_t, UINT_FAST8_MAX);
174 CHECK_WIDTH_AT_LEAST(uint_fast16_t, 16);
175 CHECK_UNSIGNED_LIMITS(uint_fast16_t, UINT_FAST16_MAX);
176 CHECK_WIDTH_AT_LEAST(uint_fast32_t, 32);
177 CHECK_UNSIGNED_LIMITS(uint_fast32_t, UINT_FAST32_MAX);
178 CHECK_WIDTH_AT_LEAST(uint_fast64_t, 64);
179 CHECK_UNSIGNED_LIMITS(uint_fast64_t, UINT_FAST64_MAX);
186 CHECK_SIGNED_LIMITS_2(intptr_t, INTPTR_MIN, INTPTR_MAX, -0x7fff, 0x7fff);
189 CHECK_UNSIGNED_LIMITS_2(uintptr_t, UINTPTR_MAX, 0xffffU);
196 CHECK_WIDTH_AT_LEAST(intmax_t, 64);
197 CHECK_WIDTH_ORDER(long long, intmax_t);
198 CHECK_WIDTH_ORDER(int_fast8_t, intmax_t);
199 CHECK_WIDTH_ORDER(int_fast16_t, intmax_t);
200 CHECK_WIDTH_ORDER(int_fast32_t, intmax_t);
201 CHECK_WIDTH_ORDER(int_fast64_t, intmax_t);
202 CHECK_SIGNED_LIMITS(intmax_t, INTMAX_MIN, INTMAX_MAX);
203 CHECK_WIDTH_AT_LEAST(uintmax_t, 64);
204 CHECK_WIDTH_ORDER(unsigned long long, uintmax_t);
205 CHECK_WIDTH_ORDER(uint_fast8_t, uintmax_t);
206 CHECK_WIDTH_ORDER(uint_fast16_t, uintmax_t);
207 CHECK_WIDTH_ORDER(uint_fast32_t, uintmax_t);
208 CHECK_WIDTH_ORDER(uint_fast64_t, uintmax_t);
209 CHECK_UNSIGNED_LIMITS(uintmax_t, UINTMAX_MAX);
213 test_misc_limits (void)
215 CHECK_SIGNED_LIMITS_2(__PTRDIFF_TYPE__, PTRDIFF_MIN, PTRDIFF_MAX, -65535L, 65535L);
216 CHECK_LIMITS_2(sig_atomic_t, SIG_ATOMIC_MIN, SIG_ATOMIC_MAX, -127, 127, 255);
217 CHECK_UNSIGNED_LIMITS_2(__SIZE_TYPE__, SIZE_MAX, 65535U);
218 CHECK_LIMITS_2(__WCHAR_TYPE__, WCHAR_MIN, WCHAR_MAX, -127, 127, 255);
219 CHECK_LIMITS_2(__WINT_TYPE__, WINT_MIN, WINT_MAX, -32767, 32767, 65535);
223 test_constants (void)
225 CHECK_CONSTS(int_least8_t, INT8_C);
226 CHECK_CONSTS(int_least16_t, INT16_C);
227 CHECK_CONSTS(int_least32_t, INT32_C);
228 CHECK_CONSTS(int_least64_t, INT64_C);
229 CHECK_CONSTS(intmax_t, INTMAX_C);
230 CHECK_CONSTS(uint_least8_t, UINT8_C);
231 CHECK_CONSTS(uint_least16_t, UINT16_C);
232 CHECK_CONSTS(uint_least32_t, UINT32_C);
233 CHECK_CONSTS(uint_least64_t, UINT64_C);
234 CHECK_CONSTS(uintmax_t, UINTMAX_C);
236 #error "INT8_C not usable in #if"
238 #if INT16_C(12) != 12
239 #error "INT16_C not usable in #if"
241 #if INT32_C(12) != 12
242 #error "INT32_C not usable in #if"
244 #if INT64_C(12) != 12
245 #error "INT64_C not usable in #if"
247 #if INTMAX_C(12) != 12
248 #error "INTMAX_C not usable in #if"
250 #if UINT8_C(12) != 12
251 #error "UINT8_C not usable in #if"
253 #if UINT16_C(12) != 12
254 #error "UINT16_C not usable in #if"
256 #if UINT32_C(12) != 12
257 #error "UINT32_C not usable in #if"
259 #if UINT64_C(12) != 12
260 #error "UINT64_C not usable in #if"
262 #if UINTMAX_C(12) != 12
263 #error "UINTMAX_C not usable in #if"