File: environ.c

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glibc 2.24-11+deb9u4
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/* This file just defines the `__environ' variable (and alias `environ').  */

#include <unistd.h>
#include <stddef.h>

/* This must be initialized; we cannot have a weak alias into bss.  */
char **__environ = NULL;
weak_alias (__environ, environ)

/* The SVR4 ABI says `_environ' will be the name to use
   in case the user overrides the weak alias `environ'.  */
weak_alias (__environ, _environ)