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sdk: add _X_ATTRIBUTE_NONNULL_ARGS() macro 

Adding a macro for specifying nonnull attributes, for easier future
transition to new C23 attributes or supporting strange compilers that
don't understand this attribute.

The purpose of using those attributes is aiding compiler warnings and
potential optimizations.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult 2025-05-23 12:37:42 +02:00
parent 0d2213ec44
commit 802a581f51
1 changed files with 9 additions and 0 deletions
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9
include/os.h
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@ -58,6 +58,15 @@ SOFTWARE.
#include <X11/Xfuncproto.h> #include <X11/Xfuncproto.h>
/*
* @brief macro for specifying non-null arguments
*
* part of public SDK / driver API
*/
#ifndef _X_ATTRIBUTE_NONNULL_ARG
#define _X_ATTRIBUTE_NONNULL_ARG(...) __attribute__((nonnull(__VA_ARGS__)))
#endif
#define SCREEN_SAVER_ON 0 #define SCREEN_SAVER_ON 0
#define SCREEN_SAVER_OFF 1 #define SCREEN_SAVER_OFF 1
#define SCREEN_SAVER_FORCER 2 #define SCREEN_SAVER_FORCER 2