clearenv.c\env\src - musl - musl - an implementation of the standard library for Linux-based systems

#define _GNU_SOURCE
#include <stdlib.h>
#include <unistd.h>
static void dummy(char *old, char *new) {}
weak_alias(dummy, __env_rm_add);
int clearenv()
{
	char **e = __environ;
	__environ = 0;
	if (e) while (*e) __env_rm_add(*e++, 0);
	return 0;
}