1/* This file just defines the `__environ' variable (and alias `environ'). */
2
3#include <unistd.h>
4#include <stddef.h>
5
6/* This must be initialized; we cannot have a weak alias into bss. */
7char **__environ = NULL;
8weak_alias (__environ, environ)
9
10/* The SVR4 ABI says `_environ' will be the name to use
11 in case the user overrides the weak alias `environ'. */
12weak_alias (__environ, _environ)
13

source code of glibc/posix/environ.c