$OpenBSD: patch-config_h_in,v 1.1 2010/05/19 07:25:12 espie Exp $
--- config.h.in.orig	Wed May 19 09:18:44 2010
+++ config.h.in	Wed May 19 09:19:25 2010
@@ -434,7 +434,9 @@
        #pragma alloca
 #  else
 #    ifndef alloca /* predefined by HP cc +Olibcalls */
+#	ifndef __OpenBSD__
          char *alloca ();
+#	endif
 #    endif
 #  endif
 #endif
