ref: 7b193c3dadbe36acdcf3e203f5bd36b95b4c57b6
dir: /lib/c/include/bits/amd64-sysv/arch/stddef.h/
#ifndef _SIZET typedef unsigned long size_t; #define _SIZET #endif #ifndef _WCHAR_T typedef int wchar_t; #define _WCHAR_T #endif #ifndef _PTRDIFF_T typedef long ptrdiff_t; #define _PTRDIFF_T #endif