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TheRock/compiler/amd-llvm/clang/test/Sema/attr-c2x.c
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

44 lines
1.8 KiB
C

// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -Wno-strict-prototypes -fsyntax-only -verify -std=c2x %s
struct S {};
struct S * [[clang::address_space(1)]] Foo;
enum [[clang::enum_extensibility(open)]] EnumOpen {
C0 = 1, C1 = 10
};
enum [[clang::flag_enum]] EnumFlag {
D0 = 1, D1 = 8
};
[[clang::overloadable]] void foo(void *c);
[[clang::overloadable]] void foo(char *c);
void context_okay(void *context [[clang::swift_context]]) [[clang::swiftcall]];
void context_okay2(void *context [[clang::swift_context]], void *selfType, char **selfWitnessTable) [[clang::swiftcall]];
void context_async_okay(void *context [[clang::swift_async_context]]) [[clang::swiftasynccall]];
void context_async_okay2(void *context [[clang::swift_async_context]], void *selfType, char **selfWitnessTable) [[clang::swiftasynccall]];
[[clang::ownership_returns(foo)]] void *f1(void);
[[clang::ownership_returns(foo)]] void *f2();
[[clang::unavailable("not available - replaced")]] void foo2(void); // expected-note {{'foo2' has been explicitly marked unavailable here}}
void bar(void) {
foo2(); // expected-error {{'foo2' is unavailable: not available - replaced}}
}
[[nodiscard]] int without_underscores(void);
[[__nodiscard__]] int underscores(void);
// Match GCC's behavior for C attributes as well.
[[gnu::constructor]] void ctor_func(void);
[[gnu::destructor]] void dtor_func(void);
[[gnu::hot]] void hot_func(void);
[[__gnu__::hot]] void hot_func2(void);
[[gnu::__hot__]] void hot_func3(void);
[[__gnu__::__hot__]] void hot_func4(void);
// Note how not all GCC attributes are supported in C.
[[gnu::abi_tag("")]] void abi_func(void); // expected-warning {{unknown attribute 'gnu::abi_tag' ignored}}
struct S s [[gnu::init_priority(1)]]; // expected-warning {{unknown attribute 'gnu::init_priority' ignored}}