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