| // RUN: %clang_cc1 -std=c11 -Wgnu-folding-constant -fsyntax-only -verify %s |
| // RUN: %clang_cc1 -fms-compatibility -Wgnu-folding-constant -DMS -fsyntax-only -verify=expected,ms %s |
| // RUN: %clang_cc1 -std=c99 -pedantic -Wgnu-folding-constant -fsyntax-only -verify=expected,ext %s |
| // RUN: %clang_cc1 -xc++ -std=c++11 -pedantic -fsyntax-only -verify=expected,ext,cxx %s |
| |
| _Static_assert("foo", "string is nonzero"); // ext-warning {{'_Static_assert' is a C11 extension}} |
| #ifndef __cplusplus |
| // expected-warning@-2 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}} |
| #endif |
| |
| _Static_assert(1, "1 is nonzero"); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(0, "0 is nonzero"); // expected-error {{static assertion failed: 0 is nonzero}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| |
| #ifdef MS |
| static_assert(1, "1 is nonzero"); // ms-warning {{use of 'static_assert' without inclusion of <assert.h> is a Microsoft extension}} |
| #endif |
| |
| void foo(void) { |
| _Static_assert(1, "1 is nonzero"); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(0, "0 is nonzero"); // expected-error {{static assertion failed: 0 is nonzero}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| #ifdef MS |
| static_assert(1, "1 is nonzero"); // ms-warning {{use of 'static_assert' without}} |
| #endif |
| } |
| |
| _Static_assert(1, invalid); // expected-error {{expected string literal for diagnostic message in static_assert}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| |
| struct A { |
| int a; |
| _Static_assert(1, "1 is nonzero"); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(0, "0 is nonzero"); // expected-error {{static assertion failed: 0 is nonzero}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| #ifdef MS |
| static_assert(1, "1 is nonzero"); // ms-warning {{use of 'static_assert' without}} |
| #endif |
| }; |
| |
| #ifdef __cplusplus |
| #define ASSERT_IS_TYPE(T) __is_same(T, T) |
| #else |
| #define ASSERT_IS_TYPE(T) __builtin_types_compatible_p(T, T) |
| #endif |
| |
| #define UNION(T1, T2) union { \ |
| __typeof__(T1) one; \ |
| __typeof__(T2) two; \ |
| _Static_assert(ASSERT_IS_TYPE(T1), "T1 is not a type"); \ |
| _Static_assert(ASSERT_IS_TYPE(T2), "T2 is not a type"); \ |
| _Static_assert(sizeof(T1) == sizeof(T2), "type size mismatch"); \ |
| } |
| |
| typedef UNION(unsigned, struct A) U1; // ext-warning 3 {{'_Static_assert' is a C11 extension}} |
| UNION(char[2], short) u2 = { .one = { 'a', 'b' } }; // ext-warning 3 {{'_Static_assert' is a C11 extension}} cxx-warning {{designated initializers are a C++20 extension}} |
| typedef UNION(char, short) U3; // expected-error {{static assertion failed due to requirement 'sizeof(char) == sizeof(short)': type size mismatch}} \ |
| // expected-note{{evaluates to '1 == 2'}} \ |
| // ext-warning 3 {{'_Static_assert' is a C11 extension}} |
| typedef UNION(float, 0.5f) U4; // expected-error {{expected a type}} \ |
| // ext-warning 3 {{'_Static_assert' is a C11 extension}} |
| |
| // After defining the assert macro in MS-compatibility mode, we should |
| // no longer warn about including <assert.h> under the assumption the |
| // user already did that. |
| #ifdef MS |
| #define assert(expr) |
| static_assert(1, "1 is nonzero"); // ok |
| |
| // But we should still warn if the user did something bonkers. |
| #undef static_assert |
| static_assert(1, "1 is nonzero"); // ms-warning {{use of 'static_assert' without}} |
| #endif |
| |
| _Static_assert(1 , "") // expected-error {{expected ';' after '_Static_assert'}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| |
| static int static_var; |
| _Static_assert(&static_var != 0, ""); // ext-warning {{'_Static_assert' is a C11 extension}} \ |
| // expected-warning {{comparison of address of 'static_var' not equal to a null pointer is always true}} |
| _Static_assert("" != 0, ""); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(("" != 0), ""); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(*"1", ""); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert("1"[0], ""); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(1.0 != 0, ""); // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(__builtin_strlen("1"), ""); // ext-warning {{'_Static_assert' is a C11 extension}} |
| #ifndef __cplusplus |
| // expected-warning@-9 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}} |
| // expected-warning@-8 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}} |
| // expected-warning@-8 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}} |
| // expected-warning@-8 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}} |
| // expected-warning@-8 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}} |
| // expected-warning@-8 {{expression is not an integer constant expression; folding it to a constant is a GNU extension}} |
| // __builtin_strlen(literal) is considered an integer constant expression |
| // and doesn't cause a pedantic warning |
| #endif |
| |
| |
| _Static_assert(0, L"\xFFFFFFFF"); // expected-warning {{encoding prefix 'L' on an unevaluated string literal has no effect}} \ |
| // expected-error {{invalid escape sequence '\xFFFFFFFF' in an unevaluated string literal}} \ |
| // expected-error {{hex escape sequence out of range}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| _Static_assert(0, L"\u1234"); // expected-warning {{encoding prefix 'L' on an unevaluated string literal has no effect}} \ |
| // expected-error {{static assertion failed: ሴ}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| |
| _Static_assert(0, L"\x1ff" // expected-warning {{encoding prefix 'L' on an unevaluated string literal has no effect}} \ |
| // expected-error {{hex escape sequence out of range}} \ |
| // expected-error {{invalid escape sequence '\x1ff' in an unevaluated string literal}} \ |
| // ext-warning {{'_Static_assert' is a C11 extension}} |
| "0\x123" // expected-error {{invalid escape sequence '\x123' in an unevaluated string literal}} |
| "fx\xfffff" // expected-error {{invalid escape sequence '\xfffff' in an unevaluated string literal}} |
| "goop"); |
