diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index ce6c669b3..b9a89b4cb 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2009-02-13  Corinna Vinschen  <corinna@vinschen.de>
+
+	* environ.cc (_getenv_r): New function.
+
 2009-02-13  Corinna Vinschen  <corinna@vinschen.de>
 
 	* posix.sgml: Move dirfd to SUSv4 section.
diff --git a/winsup/cygwin/environ.cc b/winsup/cygwin/environ.cc
index b88738a47..fa4441de6 100644
--- a/winsup/cygwin/environ.cc
+++ b/winsup/cygwin/environ.cc
@@ -284,6 +284,15 @@ getenv (const char *name)
   return findenv_func (name, &offset);
 }
 
+/* This function is required so that newlib uses the same environment
+   as Cygwin. */
+extern "C" char *
+_getenv_r (struct _reent *, const char *name)
+{
+  int offset;
+  return findenv_func (name, &offset);
+}
+
 static int __stdcall
 envsize (const char * const *in_envp)
 {