Attribute Detection

macros for determining supported attributes More...

Collaboration diagram for Attribute Detection:

Macros
#define	native_has_attribute(__x)
	__has_attribute(x)
#define	native_diagnose_if(condition, message)
	Reject a call when Clang can prove that its arguments violate a precondition.
#define	native_has_declspec_attribute(__x)
	portable __has_declspec_attribute(__x)

Detailed Description

macros for determining supported attributes

Macro Definition Documentation

native_diagnose_if

#define native_diagnose_if	(		condition,
			message )

Reject a call when Clang can prove that its arguments violate a precondition.

Place after the function declarator and any trailing requires clause. The condition can name parameters. An unknown condition leaves the call valid; this annotation adds no runtime check and does not affect overload selection.

Definition at line 50 of file attributes.h.

native_has_attribute

#define native_has_attribute

(

__x

)

Value:

0

__has_attribute(x)

Used as the primary means for detecting advanced annotation features

Definition at line 34 of file attributes.h.

native_has_declspec_attribute

#define native_has_declspec_attribute

(

__x

)

Value:

0

portable __has_declspec_attribute(__x)

Defaults to 1 on MSVC, where we can assume __declspec(x) is well supported.

Uses the __has_declspec_attribute(x) implementation in Clang

Defaults to 0 otherwise.

Definition at line 71 of file attributes.h.