1 // RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic -Wno-string-plus-int -triple=i686-apple-darwin9 2 // This test needs to set the target because it uses __builtin_ia32_vec_ext_v4si 3 4 int test1(float a, int b) { 5 return __builtin_isless(a, b); // expected-note {{declared here}} 6 } 7 int test2(int a, int b) { 8 return __builtin_islessequal(a, b); // expected-error {{floating point type}} 9 } 10 11 int test3(double a, float b) { 12 return __builtin_isless(a, b); 13 } 14 int test4(int* a, double b) { 15 return __builtin_islessequal(a, b); // expected-error {{floating point type}} 16 } 17 18 int test5(float a, long double b) { 19 return __builtin_isless(a, b, b); // expected-error {{too many arguments}} 20 } 21 int test6(float a, long double b) { 22 return __builtin_islessequal(a); // expected-error {{too few arguments}} 23 } 24 25 26 #define CFSTR __builtin___CFStringMakeConstantString 27 void test7() { 28 const void *X; 29 X = CFSTR("\242"); // expected-warning {{input conversion stopped}} 30 X = CFSTR("\0"); // no-warning 31 X = CFSTR(242); // expected-error {{CFString literal is not a string constant}} expected-warning {{incompatible integer to pointer conversion}} 32 X = CFSTR("foo", "bar"); // expected-error {{too many arguments to function call}} 33 } 34 35 36 // atomics. 37 38 void test9(short v) { 39 unsigned i, old; 40 41 old = __sync_fetch_and_add(); // expected-error {{too few arguments to function call}} 42 old = __sync_fetch_and_add(&old); // expected-error {{too few arguments to function call}} 43 old = __sync_fetch_and_add((unsigned*)0, 42i); // expected-warning {{imaginary constants are a GNU extension}} 44 45 // PR7600: Pointers are implicitly casted to integers and back. 46 void *old_ptr = __sync_val_compare_and_swap((void**)0, 0, 0); 47 48 // Ensure the return type is correct even when implicit casts are stripped 49 // away. This triggers an assertion while checking the comparison otherwise. 50 if (__sync_fetch_and_add(&old, 1) == 1) { 51 } 52 } 53 54 // overloaded atomics should be declared only once. 55 void test9_1(volatile int* ptr, int val) { 56 __sync_fetch_and_add_4(ptr, val); 57 } 58 void test9_2(volatile int* ptr, int val) { 59 __sync_fetch_and_add(ptr, val); 60 } 61 void test9_3(volatile int* ptr, int val) { 62 __sync_fetch_and_add_4(ptr, val); 63 __sync_fetch_and_add(ptr, val); 64 __sync_fetch_and_add(ptr, val); 65 __sync_fetch_and_add_4(ptr, val); 66 __sync_fetch_and_add_4(ptr, val); 67 } 68 69 // rdar://7236819 70 void test10(void) __attribute__((noreturn)); 71 72 void test10(void) { 73 __asm__("int3"); 74 __builtin_unreachable(); 75 76 // No warning about falling off the end of a noreturn function. 77 } 78 79 void test11(int X) { 80 switch (X) { 81 case __builtin_eh_return_data_regno(0): // constant foldable. 82 break; 83 } 84 85 __builtin_eh_return_data_regno(X); // expected-error {{argument to '__builtin_eh_return_data_regno' must be a constant integer}} 86 } 87 88 // PR5062 89 void test12(void) __attribute__((__noreturn__)); 90 void test12(void) { 91 __builtin_trap(); // no warning because trap is noreturn. 92 } 93 94 void test_unknown_builtin(int a, int b) { 95 __builtin_isles(a, b); // expected-error{{use of unknown builtin}} \ 96 // expected-note{{did you mean '__builtin_isless'?}} 97 } 98 99 int test13() { 100 __builtin_eh_return(0, 0); // no warning, eh_return never returns. 101 } 102 103 // <rdar://problem/8228293> 104 void test14() { 105 int old; 106 old = __sync_fetch_and_min((volatile int *)&old, 1); 107 } 108 109 // <rdar://problem/8336581> 110 void test15(const char *s) { 111 __builtin_printf("string is %s\n", s); 112 } 113 114 // PR7885 115 int test16() { 116 return __builtin_constant_p() + // expected-error{{too few arguments}} 117 __builtin_constant_p(1, 2); // expected-error {{too many arguments}} 118 } 119 120 const int test17_n = 0; 121 const char test17_c[] = {1, 2, 3, 0}; 122 const char test17_d[] = {1, 2, 3, 4}; 123 typedef int __attribute__((vector_size(16))) IntVector; 124 struct Aggregate { int n; char c; }; 125 enum Enum { EnumValue1, EnumValue2 }; 126 127 typedef __typeof(sizeof(int)) size_t; 128 size_t strlen(const char *); 129 130 void test17() { 131 #define ASSERT(...) { int arr[(__VA_ARGS__) ? 1 : -1]; } 132 #define T(...) ASSERT(__builtin_constant_p(__VA_ARGS__)) 133 #define F(...) ASSERT(!__builtin_constant_p(__VA_ARGS__)) 134 135 // __builtin_constant_p returns 1 if the argument folds to: 136 // - an arithmetic constant with value which is known at compile time 137 T(test17_n); 138 T(&test17_c[3] - test17_c); 139 T(3i + 5); // expected-warning {{imaginary constant}} 140 T(4.2 * 7.6); 141 T(EnumValue1); 142 T((enum Enum)(int)EnumValue2); 143 144 // - the address of the first character of a string literal, losslessly cast 145 // to any type 146 T("string literal"); 147 T((double*)"string literal"); 148 T("string literal" + 0); 149 T((long)"string literal"); 150 151 // ... and otherwise returns 0. 152 F("string literal" + 1); 153 F(&test17_n); 154 F(test17_c); 155 F(&test17_c); 156 F(&test17_d); 157 F((struct Aggregate){0, 1}); 158 F((IntVector){0, 1, 2, 3}); 159 160 // Ensure that a technique used in glibc is handled correctly. 161 #define OPT(...) (__builtin_constant_p(__VA_ARGS__) && strlen(__VA_ARGS__) < 4) 162 // FIXME: These are incorrectly treated as ICEs because strlen is treated as 163 // a builtin. 164 ASSERT(OPT("abc")); 165 ASSERT(!OPT("abcd")); 166 // In these cases, the strlen is non-constant, but the __builtin_constant_p 167 // is 0: the array size is not an ICE but is foldable. 168 ASSERT(!OPT(test17_c)); // expected-warning {{folded}} 169 ASSERT(!OPT(&test17_c[0])); // expected-warning {{folded}} 170 ASSERT(!OPT((char*)test17_c)); // expected-warning {{folded}} 171 ASSERT(!OPT(test17_d)); // expected-warning {{folded}} 172 ASSERT(!OPT(&test17_d[0])); // expected-warning {{folded}} 173 ASSERT(!OPT((char*)test17_d)); // expected-warning {{folded}} 174 175 #undef OPT 176 #undef T 177 #undef F 178 } 179 180 void test18() { 181 char src[1024]; 182 char dst[2048]; 183 size_t result; 184 void *ptr; 185 186 ptr = __builtin___memccpy_chk(dst, src, '\037', sizeof(src), sizeof(dst)); 187 result = __builtin___strlcpy_chk(dst, src, sizeof(src), sizeof(dst)); 188 result = __builtin___strlcat_chk(dst, src, sizeof(src), sizeof(dst)); 189 190 ptr = __builtin___memccpy_chk(dst, src, '\037', sizeof(src)); // expected-error {{too few arguments to function call}} 191 ptr = __builtin___strlcpy_chk(dst, src, sizeof(src), sizeof(dst)); // expected-warning {{incompatible integer to pointer conversion}} 192 ptr = __builtin___strlcat_chk(dst, src, sizeof(src), sizeof(dst)); // expected-warning {{incompatible integer to pointer conversion}} 193 } 194 195 void no_ms_builtins() { 196 __assume(1); // expected-warning {{implicit declaration}} 197 __noop(1); // expected-warning {{implicit declaration}} 198 __debugbreak(); // expected-warning {{implicit declaration}} 199 } 200 201 void unavailable() { 202 __builtin_operator_new(0); // expected-error {{'__builtin_operator_new' is only available in C++}} 203 __builtin_operator_delete(0); // expected-error {{'__builtin_operator_delete' is only available in C++}} 204 } 205
