GCC attributes

These macros conditionally define GCC attributes for declarations. More...

Macros
#define	CP_GCC_PURE
	Declares a function as pure function having no side effects. More...
#define	CP_GCC_NONNULL(...)
	Specifies that some pointer arguments to a function should have non-NULL values. More...

Detailed Description

These macros conditionally define GCC attributes for declarations.

They are used in C-Pluff API declarations to enable better optimization and error checking when using GCC. In non-GCC platforms they have empty values.

Macro Definition Documentation

CP_GCC_PURE

#define CP_GCC_PURE

Declares a function as pure function having no side effects.

This attribute is supported in GCC since version 2.96. Such functions can be subject to common subexpression elimination and loop optimization.

CP_GCC_NONNULL

#define CP_GCC_NONNULL

(

...

)

Specifies that some pointer arguments to a function should have non-NULL values.

Takes a variable length list of argument indexes as arguments. This attribute is supported in GCC since version 3.3. It can be used for enhanced error checking and some optimizations.