as an extension, have putenv("VAR") behave as unsetenv("VAR")
[musl] / src / env / __environ.c
1 #include "libc.h"
2
3 #undef environ
4 char **__environ = 0;
5 weak_alias(__environ, ___environ);
6 weak_alias(__environ, _environ);
7 weak_alias(__environ, environ);