| // RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic -Wstrlcpy-strlcat-size -Wno-string-plus-int -triple=i686-apple-darwin9 |
| // This test needs to set the target because it uses __builtin_ia32_vec_ext_v4si |
| |
| int test1(float a, int b) { |
| return __builtin_isless(a, b); // expected-note {{declared here}} |
| } |
| int test2(int a, int b) { |
| return __builtin_islessequal(a, b); // expected-error {{floating point type}} |
| } |
| |
| int test3(double a, float b) { |
| return __builtin_isless(a, b); |
| } |
| int test4(int* a, double b) { |
| return __builtin_islessequal(a, b); // expected-error {{floating point type}} |
| } |
| |
| int test5(float a, long double b) { |
| return __builtin_isless(a, b, b); // expected-error {{too many arguments}} |
| } |
| int test6(float a, long double b) { |
| return __builtin_islessequal(a); // expected-error {{too few arguments}} |
| } |
| |
| |
| #define CFSTR __builtin___CFStringMakeConstantString |
| void test7() { |
| const void *X; |
| X = CFSTR("\242"); // expected-warning {{input conversion stopped}} |
| X = CFSTR("\0"); // no-warning |
| X = CFSTR(242); // expected-error {{CFString literal is not a string constant}} expected-warning {{incompatible integer to pointer conversion}} |
| X = CFSTR("foo", "bar"); // expected-error {{too many arguments to function call}} |
| } |
| |
| |
| // atomics. |
| |
| void test9(short v) { |
| unsigned i, old; |
| |
| old = __sync_fetch_and_add(); // expected-error {{too few arguments to function call}} |
| old = __sync_fetch_and_add(&old); // expected-error {{too few arguments to function call}} |
| old = __sync_fetch_and_add((unsigned*)0, 42i); // expected-warning {{imaginary constants are a GNU extension}} |
| |
| // PR7600: Pointers are implicitly casted to integers and back. |
| void *old_ptr = __sync_val_compare_and_swap((void**)0, 0, 0); |
| |
| // Ensure the return type is correct even when implicit casts are stripped |
| // away. This triggers an assertion while checking the comparison otherwise. |
| if (__sync_fetch_and_add(&old, 1) == 1) { |
| } |
| } |
| |
| // overloaded atomics should be declared only once. |
| void test9_1(volatile int* ptr, int val) { |
| __sync_fetch_and_add_4(ptr, val);
|
| }
|
| void test9_2(volatile int* ptr, int val) {
|
| __sync_fetch_and_add(ptr, val);
|
| }
|
| void test9_3(volatile int* ptr, int val) {
|
| __sync_fetch_and_add_4(ptr, val);
|
| __sync_fetch_and_add(ptr, val);
|
| __sync_fetch_and_add(ptr, val);
|
| __sync_fetch_and_add_4(ptr, val);
|
| __sync_fetch_and_add_4(ptr, val);
|
| }
|
|
|
| void test9_4(volatile int* ptr, int val) {
|
| // expected-warning@+1 {{the semantics of this intrinsic changed with GCC version 4.4 - the newer semantics are provided here}}
|
| __sync_fetch_and_nand(ptr, val);
|
| }
|
|
|
| // rdar://7236819
|
| void test10(void) __attribute__((noreturn));
|
|
|
| void test10(void) {
|
| __asm__("int3");
|
| __builtin_unreachable();
|
|
|
| // No warning about falling off the end of a noreturn function.
|
| }
|
|
|
| void test11(int X) {
|
| switch (X) {
|
| case __builtin_eh_return_data_regno(0): // constant foldable.
|
| break;
|
| }
|
|
|
| __builtin_eh_return_data_regno(X); // expected-error {{argument to '__builtin_eh_return_data_regno' must be a constant integer}}
|
| }
|
|
|
| // PR5062
|
| void test12(void) __attribute__((__noreturn__));
|
| void test12(void) {
|
| __builtin_trap(); // no warning because trap is noreturn.
|
| }
|
|
|
| void test_unknown_builtin(int a, int b) {
|
| __builtin_isles(a, b); // expected-error{{use of unknown builtin}} \
|
| // expected-note{{did you mean '__builtin_isless'?}}
|
| }
|
|
|
| int test13() {
|
| __builtin_eh_return(0, 0); // no warning, eh_return never returns.
|
| }
|
|
|
| // <rdar://problem/8228293>
|
| void test14() {
|
| int old;
|
| old = __sync_fetch_and_min((volatile int *)&old, 1);
|
| }
|
|
|
| // <rdar://problem/8336581>
|
| void test15(const char *s) {
|
| __builtin_printf("string is %s\n", s);
|
| }
|
|
|
| // PR7885
|
| int test16() {
|
| return __builtin_constant_p() + // expected-error{{too few arguments}}
|
| __builtin_constant_p(1, 2); // expected-error {{too many arguments}}
|
| }
|
|
|
| const int test17_n = 0;
|
| const char test17_c[] = {1, 2, 3, 0};
|
| const char test17_d[] = {1, 2, 3, 4};
|
| typedef int __attribute__((vector_size(16))) IntVector;
|
| struct Aggregate { int n; char c; };
|
| enum Enum { EnumValue1, EnumValue2 };
|
|
|
| typedef __typeof(sizeof(int)) size_t;
|
| size_t strlen(const char *);
|
|
|
| void test17() {
|
| #define ASSERT(...) { int arr[(__VA_ARGS__) ? 1 : -1]; }
|
| #define T(...) ASSERT(__builtin_constant_p(__VA_ARGS__))
|
| #define F(...) ASSERT(!__builtin_constant_p(__VA_ARGS__))
|
|
|
| // __builtin_constant_p returns 1 if the argument folds to:
|
| // - an arithmetic constant with value which is known at compile time
|
| T(test17_n);
|
| T(&test17_c[3] - test17_c);
|
| T(3i + 5); // expected-warning {{imaginary constant}}
|
| T(4.2 * 7.6);
|
| T(EnumValue1);
|
| T((enum Enum)(int)EnumValue2);
|
|
|
| // - the address of the first character of a string literal, losslessly cast
|
| // to any type
|
| T("string literal");
|
| T((double*)"string literal");
|
| T("string literal" + 0);
|
| T((long)"string literal");
|
|
|
| // ... and otherwise returns 0.
|
| F("string literal" + 1);
|
| F(&test17_n);
|
| F(test17_c);
|
| F(&test17_c);
|
| F(&test17_d);
|
| F((struct Aggregate){0, 1});
|
| F((IntVector){0, 1, 2, 3});
|
|
|
| // Ensure that a technique used in glibc is handled correctly.
|
| #define OPT(...) (__builtin_constant_p(__VA_ARGS__) && strlen(__VA_ARGS__) < 4)
|
| // FIXME: These are incorrectly treated as ICEs because strlen is treated as
|
| // a builtin.
|
| ASSERT(OPT("abc"));
|
| ASSERT(!OPT("abcd"));
|
| // In these cases, the strlen is non-constant, but the __builtin_constant_p
|
| // is 0: the array size is not an ICE but is foldable.
|
| ASSERT(!OPT(test17_c)); // expected-warning {{folded}}
|
| ASSERT(!OPT(&test17_c[0])); // expected-warning {{folded}}
|
| ASSERT(!OPT((char*)test17_c)); // expected-warning {{folded}}
|
| ASSERT(!OPT(test17_d)); // expected-warning {{folded}}
|
| ASSERT(!OPT(&test17_d[0])); // expected-warning {{folded}}
|
| ASSERT(!OPT((char*)test17_d)); // expected-warning {{folded}}
|
|
|
| #undef OPT
|
| #undef T
|
| #undef F
|
| }
|
|
|
| void test18() {
|
| char src[1024];
|
| char dst[2048];
|
| size_t result;
|
| void *ptr;
|
|
|
| ptr = __builtin___memccpy_chk(dst, src, '\037', sizeof(src), sizeof(dst));
|
| result = __builtin___strlcpy_chk(dst, src, sizeof(dst), sizeof(dst));
|
| result = __builtin___strlcat_chk(dst, src, sizeof(dst), sizeof(dst));
|
|
|
| ptr = __builtin___memccpy_chk(dst, src, '\037', sizeof(src)); // expected-error {{too few arguments to function call}}
|
| ptr = __builtin___strlcpy_chk(dst, src, sizeof(dst), sizeof(dst)); // expected-warning {{incompatible integer to pointer conversion}}
|
| ptr = __builtin___strlcat_chk(dst, src, sizeof(dst), sizeof(dst)); // expected-warning {{incompatible integer to pointer conversion}}
|
| }
|
|
|
| void no_ms_builtins() {
|
| __assume(1); // expected-warning {{implicit declaration}}
|
| __noop(1); // expected-warning {{implicit declaration}}
|
| __debugbreak(); // expected-warning {{implicit declaration}}
|
| }
|
|
|
| void unavailable() {
|
| __builtin_operator_new(0); // expected-error {{'__builtin_operator_new' is only available in C++}}
|
| __builtin_operator_delete(0); // expected-error {{'__builtin_operator_delete' is only available in C++}}
|
| }
|
|
|
| // rdar://18259539
|
| size_t strlcpy(char * restrict dst, const char * restrict src, size_t size);
|
| size_t strlcat(char * restrict dst, const char * restrict src, size_t size);
|
|
|
| void Test19(void)
|
| {
|
| static char b[40];
|
| static char buf[20];
|
|
|
| strlcpy(buf, b, sizeof(b)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} \\
|
| // expected-note {{change size argument to be the size of the destination}}
|
| __builtin___strlcpy_chk(buf, b, sizeof(b), __builtin_object_size(buf, 0)); // expected-warning {{size argument in '__builtin___strlcpy_chk' call appears to be size of the source; expected the size of the destination}} \
|
| // expected-note {{change size argument to be the size of the destination}} \
|
| // expected-warning {{'__builtin___strlcpy_chk' will always overflow destination buffer}}
|
|
|
| strlcat(buf, b, sizeof(b)); // expected-warning {{size argument in 'strlcat' call appears to be size of the source; expected the size of the destination}} \
|
| // expected-note {{change size argument to be the size of the destination}}
|
|
|
| __builtin___strlcat_chk(buf, b, sizeof(b), __builtin_object_size(buf, 0)); // expected-warning {{size argument in '__builtin___strlcat_chk' call appears to be size of the source; expected the size of the destination}} \
|
| // expected-note {{change size argument to be the size of the destination}} \
|
| // expected-warning {{'__builtin___strlcat_chk' will always overflow destination buffer}}
|
| }
|
|
|
| // rdar://11076881
|
| char * Test20(char *p, const char *in, unsigned n)
|
| {
|
| static char buf[10];
|
|
|
| __builtin___memcpy_chk (&buf[6], in, 5, __builtin_object_size (&buf[6], 0)); // expected-warning {{'__builtin___memcpy_chk' will always overflow destination buffer}}
|
|
|
| __builtin___memcpy_chk (p, "abcde", n, __builtin_object_size (p, 0));
|
|
|
| __builtin___memcpy_chk (&buf[5], "abcde", 5, __builtin_object_size (&buf[5], 0));
|
|
|
| __builtin___memcpy_chk (&buf[5], "abcde", n, __builtin_object_size (&buf[5], 0));
|
|
|
| __builtin___memcpy_chk (&buf[6], "abcde", 5, __builtin_object_size (&buf[6], 0)); // expected-warning {{'__builtin___memcpy_chk' will always overflow destination buffer}}
|
|
|
| return buf;
|
| }
|
|
|
| void test21(const int *ptr) {
|
| __sync_fetch_and_add(ptr, 1); // expected-error{{address argument to atomic builtin cannot be const-qualified ('const int *' invalid)}}
|
| __atomic_fetch_add(ptr, 1, 0); // expected-error {{address argument to atomic operation must be a pointer to non-const type ('const int *' invalid)}}
|
| }
|
|
|
| void test22(void) {
|
| (void)__builtin_signbit(); // expected-error{{too few arguments to function call, expected 1, have 0}}
|
| (void)__builtin_signbit(1.0, 2.0, 3.0); // expected-error{{too many arguments to function call, expected 1, have 3}}
|
| (void)__builtin_signbit(1); // expected-error {{floating point classification requires argument of floating point type (passed in 'int')}}
|
| (void)__builtin_signbit(1.0);
|
| (void)__builtin_signbit(1.0f);
|
| (void)__builtin_signbit(1.0L);
|
|
|
| (void)__builtin_signbitf(); // expected-error{{too few arguments to function call, expected 1, have 0}}
|
| (void)__builtin_signbitf(1.0, 2.0, 3.0); // expected-error{{too many arguments to function call, expected 1, have 3}}
|
| (void)__builtin_signbitf(1);
|
| (void)__builtin_signbitf(1.0);
|
| (void)__builtin_signbitf(1.0f);
|
| (void)__builtin_signbitf(1.0L);
|
|
|
| (void)__builtin_signbitl(); // expected-error{{too few arguments to function call, expected 1, have 0}}
|
| (void)__builtin_signbitl(1.0, 2.0, 3.0); // expected-error{{too many arguments to function call, expected 1, have 3}}
|
| (void)__builtin_signbitl(1);
|
| (void)__builtin_signbitl(1.0);
|
| (void)__builtin_signbitl(1.0f);
|
| (void)__builtin_signbitl(1.0L);
|
| }
|