From e963cd27237cd10293bb4658ad47dd3f703b18c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Duval?= <jerome.duval@gmail.com>
Date: Tue, 9 Aug 2022 18:35:12 +0200
Subject: [PATCH] putenv: handles a string starting with = as error

Change-Id: I1ff288080ac468b5f8a75f2064e68e8086dc7a69
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5539
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
---
 src/system/libroot/posix/stdlib/env.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/system/libroot/posix/stdlib/env.cpp b/src/system/libroot/posix/stdlib/env.cpp
index bc155f0c55..36cc03b838 100644
--- a/src/system/libroot/posix/stdlib/env.cpp
+++ b/src/system/libroot/posix/stdlib/env.cpp
@@ -309,7 +309,7 @@ putenv(char *string)
 	char *value = strchr(string, '=');
 	status_t status;
 
-	if (value == NULL) {
+	if (value == NULL || value == string) {
 		__set_errno(B_BAD_VALUE);
 		return -1;
 	}