📄 errno.h
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/*
* The naming <sys/wxx.h> is required for those compilers that
* have <sys/xx.h> in the usual place but doesn't define stuff
* related to Waterloo's BSD-socket interface.
*/
#ifndef __SYS_WERRNO_H
#include <sys/werrno.h>
#endif
/*
* This only work with gcc's pre-processor
*
* #ifdef __GNUC__
* #include_next <sys/errno.h>
* #endif
*
*/
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