2edb89c746
The C and C++ standards require the argument to __has_cpp_attribute and __has_c_attribute to be expanded ([cpp.cond]p5). It would make little sense to expand the argument to those operators but not expand the argument to __has_attribute and __has_declspec, so those were both also changed in this patch. Note that it might make sense for the other builtins to also expand their argument, but it wasn't as clear to me whether the behavior would be correct there, and so they were left for a future revision.
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
// RUN: %clang_cc1 -triple arm-unknown-linux -verify -E %s -o - | FileCheck %s
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// CHECK: always_inline
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#if __has_attribute(always_inline)
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int always_inline();
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#endif
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// CHECK: __always_inline__
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#if __has_attribute(__always_inline__)
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int __always_inline__();
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#endif
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// CHECK: no_dummy_attribute
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#if !__has_attribute(dummy_attribute)
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int no_dummy_attribute();
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#endif
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// CHECK: has_has_attribute
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#ifdef __has_attribute
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int has_has_attribute();
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#endif
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// CHECK: has_something_we_dont_have
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#if !__has_attribute(something_we_dont_have)
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int has_something_we_dont_have();
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#endif
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// rdar://10253857
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#if __has_attribute(__const)
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int fn3() __attribute__ ((__const));
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#endif
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#if __has_attribute(const)
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static int constFunction() __attribute__((const));
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#endif
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// CHECK: has_no_volatile_attribute
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#if !__has_attribute(volatile)
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int has_no_volatile_attribute();
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#endif
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// CHECK: has_arm_interrupt
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#if __has_attribute(interrupt)
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int has_arm_interrupt();
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#endif
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// CHECK: does_not_have_dllexport
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#if !__has_attribute(dllexport)
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int does_not_have_dllexport();
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#endif
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// CHECK: does_not_have_uuid
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#if !__has_attribute(uuid)
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int does_not_have_uuid
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#endif
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#if __has_cpp_attribute(selectany) // expected-error {{function-like macro '__has_cpp_attribute' is not defined}}
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#endif
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// Test that macro expansion of the builtin argument works.
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#define F fallthrough
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#if __has_attribute(F)
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int has_fallthrough;
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#endif
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// CHECK: int has_fallthrough;
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