github.com/afumu/libc@v0.0.6/musl/src/include/errno.h (about)

     1  #ifndef ERRNO_H
     2  #define ERRNO_H
     3  
     4  #include "../../include/errno.h"
     5  
     6  #ifdef __GNUC__
     7  __attribute__((const))
     8  #endif
     9  hidden int *___errno_location(void);
    10  
    11  #undef errno
    12  #define errno (*___errno_location())
    13  
    14  #endif