From aeee365d72f9d14dec9430f6718e54d77c66c0a6 Mon Sep 17 00:00:00 2001
From: Pierre Joye <pajoye@php.net>
Date: Mon, 26 Sep 2011 08:49:28 +0000
Subject: [PATCH] - be sure to check if the var ha not been removed between the
 two calls

---
 ext/standard/basic_functions.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index aecefa3d94..58e36c3cff 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -4022,7 +4022,13 @@ PHP_FUNCTION(getenv)
 
 		ptr = emalloc(size);
 		size = GetEnvironmentVariableA(str, ptr, size);
-		RETURN_STRING(ptr, 0);
+		if (size == 0) {
+				/* has been removed between the two calls */
+				efree(ptr);
+				RETURN_EMPTY_STRING();
+		} else {
+			RETURN_STRING(ptr, 0);
+		}
 	}
 #else
 	/* system method returns a const */
-- 
2.50.1