9936b96d53
WG14 N2481 was adopted with minor modifications at the latest WG14 meetings. The only modification to the paper was to correct the date for the deprecated attribute to be 201904L (the corrected date value will be present in WG14 N2553 when it gets published).
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
// RUN: %clang_cc1 -fdouble-square-bracket-attributes -std=c11 -E -P %s -o - | FileCheck %s
|
|
// RUN: %clang_cc1 -std=c2x -E -P %s -o - | FileCheck %s
|
|
|
|
#define C2x(x) x: __has_c_attribute(x)
|
|
|
|
// CHECK: fallthrough: 201904L
|
|
C2x(fallthrough)
|
|
|
|
// CHECK: __nodiscard__: 201904L
|
|
C2x(__nodiscard__)
|
|
|
|
// CHECK: selectany: 0
|
|
C2x(selectany); // Known attribute not supported in C mode
|
|
|
|
// CHECK: frobble: 0
|
|
C2x(frobble) // Unknown attribute
|
|
|
|
// CHECK: frobble::frobble: 0
|
|
C2x(frobble::frobble) // Unknown vendor namespace
|
|
|
|
// CHECK: clang::annotate: 1
|
|
C2x(clang::annotate)
|
|
|
|
// CHECK: deprecated: 201904L
|
|
C2x(deprecated)
|
|
|
|
// CHECK: maybe_unused: 201904L
|
|
C2x(maybe_unused)
|
|
|
|
// CHECK: __gnu__::warn_unused_result: 201904L
|
|
C2x(__gnu__::warn_unused_result)
|
|
|
|
// CHECK: gnu::__warn_unused_result__: 201904L
|
|
C2x(gnu::__warn_unused_result__)
|
|
|
|
// We do somewhat support the __clang__ vendor namespace, but it is a
|
|
// predefined macro and thus we encourage users to use _Clang instead.
|
|
// Because of this, we do not support __has_c_attribute for that
|
|
// vendor namespace.
|
|
//
|
|
// Note, we can't use C2x here because it will expand __clang__ to 1
|
|
// too early.
|
|
// CHECK: 1::fallthrough: 0
|
|
__clang__::fallthrough: __has_c_attribute(__clang__::fallthrough)
|