$OpenBSD: patch-libbacktrace_backtrace_c,v 1.1 2011/11/16 15:12:53 jasper Exp $

__builtin_return_address() and __builtin_frame_address()
can't have a !0 argument on mips.

--- libbacktrace/backtrace.c.orig	Wed Nov 16 16:00:58 2011
+++ libbacktrace/backtrace.c	Wed Nov 16 16:01:38 2011
@@ -59,6 +59,7 @@ bt_create_backtrace(void **buffer, int depth, int flag
 		/* number of HANDLE_FRAME must match BT_MAX_DEPTH */
 		switch (i) {
 		HANDLE_FRAME(0, i, addr);
+#ifndef __BUILTIN_HACK
 		HANDLE_FRAME(1, i, addr);
 		HANDLE_FRAME(2, i, addr);
 		HANDLE_FRAME(3, i, addr);
@@ -186,6 +187,7 @@ bt_create_backtrace(void **buffer, int depth, int flag
 		HANDLE_FRAME(125, i, addr);
 		HANDLE_FRAME(126, i, addr);
 		HANDLE_FRAME(127, i, addr);
+#endif
 		default:
 			goto done;
 		}