1// RUN: %clang_cc1 -triple x86_64-unknown-unknown -std=c++11 -verify %s 2 3// Error cases. 4 5[[gnu::this_attribute_does_not_exist]] int unknown_attr; 6// expected-warning@-1 {{unknown attribute 'this_attribute_does_not_exist' ignored}} 7int [[gnu::unused]] attr_on_type; 8// expected-error@-1 {{'unused' attribute cannot be applied to types}} 9int *[[gnu::unused]] attr_on_ptr; 10// expected-warning@-1 {{attribute 'unused' ignored, because it cannot be applied to a type}} 11[[gnu::fastcall]] void pr17424_1(); 12// expected-warning@-1 {{calling convention 'fastcall' ignored for this target}} 13[[gnu::fastcall]] [[gnu::stdcall]] void pr17424_2(); 14// expected-warning@-1 {{calling convention 'fastcall' ignored for this target}} 15// expected-warning@-2 {{calling convention 'stdcall' ignored for this target}} 16[[gnu::fastcall]] __stdcall void pr17424_3(); 17// expected-warning@-1 {{calling convention 'fastcall' ignored for this target}} 18// expected-warning@-2 {{calling convention '__stdcall' ignored for this target}} 19[[gnu::fastcall]] void pr17424_4() [[gnu::stdcall]]; 20// expected-warning@-1 {{calling convention 'fastcall' ignored for this target}} 21// expected-warning@-2 {{attribute 'stdcall' ignored, because it cannot be applied to a type}} 22void pr17424_5 [[gnu::fastcall]](); 23// expected-warning@-1 {{calling convention 'fastcall' ignored for this target}} 24 25// Valid cases. 26 27void aliasb [[gnu::alias("_Z6alias1v")]] (); 28void alias1() {} 29void aliasa [[gnu::alias("_Z6alias1v")]] (); 30 31extern struct PR22493Ty { 32} PR22493 [[gnu::alias("_ZN7pcrecpp2RE6no_argE")]]; 33 34[[gnu::aligned(8)]] int aligned; 35void aligned_fn [[gnu::aligned(32)]] (); 36struct [[gnu::aligned(8)]] aligned_struct {}; 37 38void always_inline [[gnu::always_inline]] (); 39 40__thread int tls_model [[gnu::tls_model("local-exec")]]; 41 42void cleanup(int *p) { 43 int n [[gnu::cleanup(cleanup)]]; 44} 45 46void deprecated1 [[gnu::deprecated]] (); // expected-note {{here}} 47[[gnu::deprecated("custom message")]] void deprecated2(); // expected-note {{here}} 48void deprecated3() { 49 deprecated1(); // expected-warning {{deprecated}} 50 deprecated2(); // expected-warning {{custom message}} 51} 52 53[[gnu::naked(1,2,3)]] void naked(); // expected-error {{takes no arguments}} 54 55void nonnull [[gnu::nonnull]] (); // expected-warning {{applied to function with no pointer arguments}} 56 57// [[gnu::noreturn]] appertains to a declaration, and marks the innermost 58// function declarator in that declaration as being noreturn. 59int noreturn [[gnu::noreturn]]; // expected-warning {{'noreturn' only applies to function types}} 60int noreturn_fn_1(); 61int noreturn_fn_2() [[gnu::noreturn]]; // expected-warning {{cannot be applied to a type}} 62int noreturn_fn_3 [[gnu::noreturn]] (); 63[[gnu::noreturn]] int noreturn_fn_4(); 64int (*noreturn_fn_ptr_1 [[gnu::noreturn]])() = &noreturn_fn_1; // expected-error {{cannot initialize}} 65int (*noreturn_fn_ptr_2 [[gnu::noreturn]])() = &noreturn_fn_3; 66[[gnu::noreturn]] int (*noreturn_fn_ptr_3)() = &noreturn_fn_1; // expected-error {{cannot initialize}} 67[[gnu::noreturn]] int (*noreturn_fn_ptr_4)() = &noreturn_fn_3; 68 69struct [[gnu::packed]] packed { char c; int n; }; 70static_assert(sizeof(packed) == sizeof(char) + sizeof(int), "not packed"); 71