1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2
3 // GH#58229 - rejects-valid
4 __attribute__((__visibility__("default"))) [[nodiscard]] int f();
5 [[nodiscard]] __attribute__((__visibility__("default"))) int f();
6 extern "C" __attribute__((__visibility__("default"))) [[nodiscard]]
g()7 int g() { return 32; }
8
9 class c {
10 virtual void f1(const char* a, ...)
11 __attribute__ (( __format__(__printf__,2,3) )) = 0;
f2(const char * a,...)12 virtual void f2(const char* a, ...)
13 __attribute__ (( __format__(__printf__,2,3) )) {}
14 };
15
16 template <typename T> class X {
17 template <typename S> void X<S>::f() __attribute__((locks_excluded())); // expected-error{{nested name specifier 'X<S>::' for declaration does not refer into a class, class template or class template partial specialization}} \
18 // expected-warning{{attribute locks_excluded ignored, because it is not attached to a declaration}}
19 };
20
21 namespace PR17666 {
22 const int A = 1;
23 typedef int __attribute__((__aligned__(A))) T1;
24 int check1[__alignof__(T1) == 1 ? 1 : -1];
25
26 typedef int __attribute__((aligned(int(1)))) T1;
27 typedef int __attribute__((aligned(int))) T2; // expected-error {{expected '(' for function-style cast}}
28 }
29
30 __attribute((typename)) int x; // expected-warning {{unknown attribute 'typename' ignored}}
31
fn()32 void fn() {
33 void (*__attribute__((attr)) fn_ptr)() = &fn; // expected-warning{{unknown attribute 'attr' ignored}}
34 void (*__attribute__((attrA)) *__attribute__((attrB)) fn_ptr_ptr)() = &fn_ptr; // expected-warning{{unknown attribute 'attrA' ignored}} expected-warning{{unknown attribute 'attrB' ignored}}
35
36 void (&__attribute__((attr)) fn_lref)() = fn; // expected-warning{{unknown attribute 'attr' ignored}}
37 void (&&__attribute__((attr)) fn_rref)() = fn; // expected-warning{{unknown attribute 'attr' ignored}}
38
39 int i[5];
40 int (*__attribute__((attr(i[1]))) pi); // expected-warning{{unknown attribute 'attr' ignored}}
41 pi = &i[0];
42 }
43
44 [[deprecated([""])]] int WrongArgs; // expected-error {{expected string literal as argument of 'deprecated' attribute}}
45 [[,,,,,]] int Commas1; // ok
46 [[,, maybe_unused]] int Commas2; // ok
47 [[maybe_unused,,,]] int Commas3; // ok
48 [[,,maybe_unused,]] int Commas4; // ok
49 [[foo bar]] int NoComma; // expected-error {{expected ','}} \
50 // expected-warning {{unknown attribute 'foo' ignored}}
51 // expected-error@+2 2 {{expected ']'}}
52 // expected-error@+1 {{expected external declaration}}
53 [[foo
54