$OpenBSD: patch-sal_osl_unx_backtrace_h,v 1.2 2009/01/22 17:44:39 robert Exp $
--- sal/osl/unx/backtrace.h.orig.port	Fri Aug  8 07:56:09 2008
+++ sal/osl/unx/backtrace.h	Thu Jan 15 14:47:50 2009
@@ -29,7 +29,7 @@
  ************************************************************************/
 
 
-#if defined (SOLARIS) || (FREEBSD) 
+#if defined (SOLARIS) || (FREEBSD) || (OPENBSD)
 
 #ifdef __cplusplus
 extern "C" {
@@ -42,7 +42,7 @@ int backtrace( void **buffer, int max_frames );
 void backtrace_symbols_fd( void **buffer, int size, int fd );
 
 /* no frame.h on FreeBSD */
-#if defined FREEBSD
+#if defined FREEBSD || defined OPENBSD
 struct frame {
 	long	arg0[8];
 	long	arg1[6];
