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comparison clang/test/SemaCXX/cxx11-gnu-attrs.cpp @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -std=c++11 -Wno-gcc-compat -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}}
7 int [[gnu::unused]] attr_on_type;
8 // expected-error@-1 {{'unused' attribute cannot be applied to types}}
9 int *[[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 {{'fastcall' calling convention is not supported for this target}}
13 [[gnu::fastcall]] [[gnu::stdcall]] void pr17424_2();
14 // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}}
15 // expected-warning@-2 {{'stdcall' calling convention is not supported for this target}}
16 [[gnu::fastcall]] __stdcall void pr17424_3();
17 // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}}
18 // expected-warning@-2 {{'__stdcall' calling convention is not supported for this target}}
19 [[gnu::fastcall]] void pr17424_4() [[gnu::stdcall]];
20 // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}}
21 // expected-warning@-2 {{'stdcall' calling convention is not supported for this target}}
22 void pr17424_5 [[gnu::fastcall]]();
23 // expected-warning@-1 {{'fastcall' calling convention is not supported for this target}}
24
25 // Valid cases.
26
27 void aliasb [[gnu::alias("_Z6alias1v")]] ();
28 void alias1() {}
29 void aliasa [[gnu::alias("_Z6alias1v")]] ();
30
31 extern struct PR22493Ty {
32 } PR22493 [[gnu::alias("_ZN7pcrecpp2RE6no_argE")]];
33
34 [[gnu::aligned(8)]] int aligned;
35 void aligned_fn [[gnu::aligned(32)]] ();
36 struct [[gnu::aligned(8)]] aligned_struct {};
37
38 void always_inline [[gnu::always_inline]] ();
39
40 __thread int tls_model [[gnu::tls_model("local-exec")]];
41
42 void cleanup(int *p) {
43 int n [[gnu::cleanup(cleanup)]];
44 }
45
46 void deprecated1 [[gnu::deprecated]] (); // expected-note {{here}}
47 [[gnu::deprecated("custom message")]] void deprecated2(); // expected-note {{here}}
48 void 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
55 void 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.
59 int noreturn [[gnu::noreturn]]; // expected-warning {{'noreturn' only applies to function types}}
60 int noreturn_fn_1();
61 int noreturn_fn_2() [[gnu::noreturn]]; // expected-warning {{cannot be applied to a type}}
62 int noreturn_fn_3 [[gnu::noreturn]] ();
63 [[gnu::noreturn]] int noreturn_fn_4();
64 int (*noreturn_fn_ptr_1 [[gnu::noreturn]])() = &noreturn_fn_1; // expected-error {{cannot initialize}}
65 int (*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
69 struct [[gnu::packed]] packed { char c; int n; };
70 static_assert(sizeof(packed) == sizeof(char) + sizeof(int), "not packed");