not sure why this was missed in the earlier commit.
@ -1,13 +1,7 @@
#ifndef _ERR_H
#define _ERR_H
#if __STDC_VERSION__ >= 201112L
#elif defined(__GNUC__)
#define _Noreturn __attribute__((__noreturn__))
#else
#define _Noreturn
#endif
#include <features.h>
#include <stdarg.h>
#ifdef __cplusplus