Index: nounwind.c
===================================================================
--- nounwind.c	(revision 191404)
+++ nounwind.c	(working copy)
@@ -53,7 +53,8 @@
 }
 
 int
-backtrace_simple (int skip ATTRIBUTE_UNUSED,
+backtrace_simple (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		  int skip ATTRIBUTE_UNUSED,
 		  backtrace_simple_callback callback ATTRIBUTE_UNUSED,
 		  backtrace_error_callback error_callback, void *data)
 {