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
test1(float a,int b)4 int test1(float a, int b) {
5 return __builtin_isless(a, b); // expected-note {{declared here}}
6 }
test2(int a,int b)7 int test2(int a, int b) {
8 return __builtin_islessequal(a, b); // expected-error {{floating point type}}
9 }
10
test3(double a,float b)11 int test3(double a, float b) {
12 return __builtin_isless(a, b);
13 }
test4(int * a,double b)14 int test4(int* a, double b) {
15 return __builtin_islessequal(a, b); // expected-error {{floating point type}}
16 }
17
test5(float a,long double b)18 int test5(float a, long double b) {
19 return __builtin_isless(a, b, b); // expected-error {{too many arguments}}
20 }
test6(float a,long double b)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
test7()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
test9(short v)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.
test9_1(volatile int * ptr,int val)55 void test9_1(volatile int* ptr, int val) {
56 __sync_fetch_and_add_4(ptr, val);
57 }
test9_2(volatile int * ptr,int val)58 void test9_2(volatile int* ptr, int val) {
59 __sync_fetch_and_add(ptr, val);
60 }
test9_3(volatile int * ptr,int val)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
test10(void)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
test11(int X)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__));
test12(void)90 void test12(void) {
91 __builtin_trap(); // no warning because trap is noreturn.
92 }
93
test_unknown_builtin(int a,int b)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
test13()99 int test13() {
100 __builtin_eh_return(0, 0); // no warning, eh_return never returns.
101 }
102
103 // <rdar://problem/8228293>
test14()104 void test14() {
105 int old;
106 old = __sync_fetch_and_min((volatile int *)&old, 1);
107 }
108
109 // <rdar://problem/8336581>
test15(const char * s)110 void test15(const char *s) {
111 __builtin_printf("string is %s\n", s);
112 }
113
114 // PR7885
test16()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
test17()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
test18()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
no_ms_builtins()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
unavailable()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