From: Rich Felker <dalias@aerifal.cx>
Date: Fri, 29 Jul 2011 00:43:40 +0000 (-0400)
Subject: fix for setenv bogus var argument handling
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=649af9f73a84aa45742324d44384a873c8709915

fix for setenv bogus var argument handling

thanks to mikachu

per POSIX:

The setenv() function shall fail if:

[EINVAL] The name argument is a null pointer, points to an empty
string, or points to a string containing an '=' character.
---

diff --git a/src/env/setenv.c b/src/env/setenv.c
index 03e165c8..c2c25444 100644
--- a/src/env/setenv.c
+++ b/src/env/setenv.c
@@ -9,7 +9,7 @@ int setenv(const char *var, const char *value, int overwrite)
 	char *s;
 	int l1, l2;
 
-	if (strchr(var, '=')) {
+	if (!var || !*var || strchr(var, '=')) {
 		errno = EINVAL;
 		return -1;
 	}