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Add __diagused and __debugused. These are for marking variables that

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are used only in diagnotic or debug code, but unused when NDEBUG is
defined, or DIAGNOSTIC is not defined, or DEBUG is not defined.
This commit is contained in:
apb 2013-10-25 08:51:55 +00:00
parent 5c43044692
commit 796121ee65
1 changed files with 39 additions and 1 deletions
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40
sys/sys/cdefs.h
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@ -1,4 +1,4 @@
/* $NetBSD: cdefs.h,v 1.114 2013/10/25 08:47:30 apb Exp $ */
/* $NetBSD: cdefs.h,v 1.115 2013/10/25 08:51:55 apb Exp $ */
/*
* Copyright (c) 1991, 1993
@ -271,6 +271,44 @@
#define __used __unused
#endif
/*
* __diagused: Note that variable is used in diagnostic code, but may be
* unused in non-diagnostic code.
*
* In the kernel, variables that are used when DIAGNOSTIC is defined,
* but unused when DIAGNOSTIC is not defined, may be declared with
* __diagused. In userland, variables that are used when NDEBUG is not
* defined, but unused when NDEBUG is defined, may be declared with
* __diagused.
*
* Variables used only in assert(3) or KASSERT(9) macros are likely
* candidates for being declared with __diagused.
*/
#if (defined(_KERNEL) && defined(DIAGNOSTIC)) \
|| (!defined(_KERNEL) && !defined(NDEBUG))
#define __diagused /* empty */
#else
#define __diagused __unused
#endif
/*
* __debugused: Note that variable is used in debug code, but may be
* unused in non-debug code.
*
* In either the kernel or userland, variables that are used when DEBUG
* is defined, but unused when DEBUG is not defined, may be declared with
* __debugused.
*
* In the kernel, variables used only in KDASSERT(9) macros are likely
* candidates for being declared with __debugused. There is no
* established convention for the use of DEBUG in userland code.
*/
#if defined(DEBUG)
#define __debugused /* empty */
#else
#define __debugused __unused
#endif
#if __GNUC_PREREQ__(3, 1)
#define __noprofile __attribute__((__no_instrument_function__))
#else