From 722ea289a7e3aa0e4c346d81c2ed99aa981ba77d Mon Sep 17 00:00:00 2001
From: Sampo Savolainen <v2@iki.fi>
Date: Sat, 21 Jul 2007 13:16:36 +0000
Subject: [PATCH] Workaround / safeguard which should enable punching in more
 than once due to wrongly set last_recordable_frame.

git-svn-id: svn://localhost/ardour2/trunk@2170 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/ardour/audio_diskstream.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libs/ardour/audio_diskstream.cc b/libs/ardour/audio_diskstream.cc
index d0e2b24263..ceee6467ab 100644
--- a/libs/ardour/audio_diskstream.cc
+++ b/libs/ardour/audio_diskstream.cc
@@ -557,6 +557,11 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
 	if (nominally_recording || (_session.get_record_enabled() && Config->get_punch_in())) {
 		OverlapType ot;
 		
+		// Safeguard against situations where process() goes haywire when autopunching and last_recordable_frame < first_recordable_frame
+		if (last_recordable_frame < first_recordable_frame) {
+			last_recordable_frame = max_frames; 
+		}
+
 		ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
 
 		switch (ot) {