| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -std=c++11 -Wno-gcc-compat -verify %s |
| |
| // Error cases. |
| |
| [[gnu::this_attribute_does_not_exist]] int unknown_attr; |
| // expected-warning@-1 {{unknown attribute 'this_attribute_does_not_exist' ignored}} |
| int [[gnu::unused]] attr_on_type; |
| // expected-error@-1 {{'unused' attribute cannot be applied to types}} |
| int *[[gnu::unused]] attr_on_ptr; |
| // expected-warning@-1 {{attribute 'unused' ignored, because it cannot be applied to a type}} |
| [[gnu::fastcall]] void pr17424_1(); |
| // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}} |
| [[gnu::fastcall]] [[gnu::stdcall]] void pr17424_2(); |
| // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}} |
| // expected-warning@-2 {{'stdcall' calling convention is not supported for this target}} |
| [[gnu::fastcall]] __stdcall void pr17424_3(); |
| // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}} |
| // expected-warning@-2 {{'__stdcall' calling convention is not supported for this target}} |
| [[gnu::fastcall]] void pr17424_4() [[gnu::stdcall]]; |
| // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}} |
| // expected-warning@-2 {{'stdcall' calling convention is not supported for this target}} |
| void pr17424_5 [[gnu::fastcall]](); |
| // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}} |
| |
| // Valid cases. |
| |
| void aliasb [[gnu::alias("_Z6alias1v")]] (); |
| void alias1() {} |
| void aliasa [[gnu::alias("_Z6alias1v")]] (); |
| |
| extern struct PR22493Ty { |
| } PR22493 [[gnu::alias("_ZN7pcrecpp2RE6no_argE")]]; |
| |
| [[gnu::aligned(8)]] int aligned; |
| void aligned_fn [[gnu::aligned(32)]] (); |
| struct [[gnu::aligned(8)]] aligned_struct {}; |
| |
| void always_inline [[gnu::always_inline]] (); |
| |
| __thread int tls_model [[gnu::tls_model("local-exec")]]; |
| |
| void cleanup(int *p) { |
| int n [[gnu::cleanup(cleanup)]]; |
| } |
| |
| void deprecated1 [[gnu::deprecated]] (); // expected-note {{here}} |
| [[gnu::deprecated("custom message")]] void deprecated2(); // expected-note {{here}} |
| void deprecated3() { |
| deprecated1(); // expected-warning {{deprecated}} |
| deprecated2(); // expected-warning {{custom message}} |
| } |
| |
| [[gnu::naked(1,2,3)]] void naked(); // expected-error {{takes no arguments}} |
| |
| void nonnull [[gnu::nonnull]] (); // expected-warning {{applied to function with no pointer arguments}} |
| |
| // [[gnu::noreturn]] appertains to a declaration, and marks the innermost |
| // function declarator in that declaration as being noreturn. |
| int noreturn [[gnu::noreturn]]; // expected-warning {{'noreturn' only applies to function types}} |
| int noreturn_fn_1(); |
| int noreturn_fn_2() [[gnu::noreturn]]; // expected-warning {{cannot be applied to a type}} |
| int noreturn_fn_3 [[gnu::noreturn]] (); |
| [[gnu::noreturn]] int noreturn_fn_4(); |
| int (*noreturn_fn_ptr_1 [[gnu::noreturn]])() = &noreturn_fn_1; // expected-error {{cannot initialize}} |
| int (*noreturn_fn_ptr_2 [[gnu::noreturn]])() = &noreturn_fn_3; |
| [[gnu::noreturn]] int (*noreturn_fn_ptr_3)() = &noreturn_fn_1; // expected-error {{cannot initialize}} |
| [[gnu::noreturn]] int (*noreturn_fn_ptr_4)() = &noreturn_fn_3; |
| |
| struct [[gnu::packed]] packed { char c; int n; }; |
| static_assert(sizeof(packed) == sizeof(char) + sizeof(int), "not packed"); |