attribute.adoc

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attribute

__attribute__ ((attribute-list))

attribute-list:
     attributeopt
     attribute-list, attributeopt

attribute:
     attribute-token attribute-argument-clauseopt

attribute-token:
     identifier

attribute-argument-clause:
     ( attribute-argument-list )

attribute-argument-list:
     attribute-argument
     attribute-argument-list, attribute-argument

attribute-argument:
     assignment-expression

Description

This section describes the syntax with which attribute may be used, and the constructs to which attribute specifiers bind.

An attribute specifier is of the form attribute attribute-list.

This syntax is taken directly from GCC but unlike GCC, which allows attributes to be applied only to functions, types, and variables, OpenCL attributes can be associated with:

• types

• functions

• variables

• blocks

• control-flow statements

In general, the rules for how an attribute binds for a given context are non-trivial and the reader is pointed to GCC’s documentation and Maurer and Wong’s paper (See the "References" section in the OpenCL specification for details.)

Also see

Type Attributes, Variable Attributes, Block and Control-Flow Statement Attributes, Function Qualifiers

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