From: Alexander Monakov <amonakov@ispras.ru>
Date: Sun, 3 Sep 2017 19:12:21 +0000 (+0300)
Subject: free allocations in clearenv
X-Git-Tag: v1.1.17~16
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=cc0dbd5f09337c187156fe8b697245e6ea9263d0;p=oweals%2Fmusl.git

free allocations in clearenv

This aligns clearenv with the Linux man page by setting 'environ'
rather than '*environ' to NULL, and stops it from leaking entries
allocated by the libc.
---

diff --git a/src/env/clearenv.c b/src/env/clearenv.c
index 62d50952..da187752 100644
--- a/src/env/clearenv.c
+++ b/src/env/clearenv.c
@@ -1,10 +1,14 @@
 #define _GNU_SOURCE
 #include <stdlib.h>
+#include "libc.h"
 
-extern char **__environ;
+static void dummy(char *old, char *new) {}
+weak_alias(dummy, __env_rm_add);
 
 int clearenv()
 {
-	__environ[0] = 0;
+	char **e = __environ;
+	__environ = 0;
+	if (e) while (*e) __env_rm_add(*e++, 0);
 	return 0;
 }