attributes.h File Reference

Macro definitions for various function/variable attributes. More...

Go to the source code of this file.

Macros
#define	AV_GCC_VERSION_AT_LEAST(x, y)   0
#define	AV_GCC_VERSION_AT_MOST(x, y)   0
#define	av_always_inline   inline
#define	av_extern_inline   inline
#define	av_warn_unused_result
#define	av_noinline
#define	av_pure
#define	av_const
#define	av_cold
#define	av_flatten
#define	attribute_deprecated
#define	AV_NOWARN_DEPRECATED(code)   code
	Disable warnings about deprecated features This is useful for sections of code kept for backward compatibility and scheduled for removal.
#define	av_unused
#define	av_used
	Mark a variable as used and prevent the compiler from optimizing it away. More...
#define	av_alias
#define	av_uninit(x)   x
#define	av_builtin_constant_p(x)   0
#define	av_printf_format(fmtpos, attrpos)
#define	av_noreturn

Detailed Description

Macro definitions for various function/variable attributes.

Macro Definition Documentation

av_used

#define av_used

Mark a variable as used and prevent the compiler from optimizing it away.

This is useful for variables accessed only from inline assembler without the compiler being aware.