$NetBSD: patch-cl,v 1.1 2005/06/24 06:43:47 jlam Exp $

--- ext/SDBM_File/sdbm/sdbm.c.orig	2003-08-27 06:30:22.000000000 -0400
+++ ext/SDBM_File/sdbm/sdbm.c
@@ -34,10 +34,12 @@
 /*
  * externals
  */
-#ifndef WIN32
-#ifndef sun
-extern int errno;
-#endif
+#ifndef errno
+	extern int errno;     /* ANSI allows errno to be an lvalue expr.
+			       * For example in multithreaded environments
+			       * something like this might happen:
+			       * extern int *_errno(void);
+			       * #define errno (*_errno()) */
 #endif
 
 extern Malloc_t malloc proto((MEM_SIZE));