From 295f361f5eaa2c42f7c5bba0001e465c2ffdc340 Mon Sep 17 00:00:00 2001
From: GZharun <grygoriiz@wavesglobal.com>
Date: Sun, 31 Aug 2014 13:05:42 +0300
Subject: [PATCH] [Summary] Fixed issue with crash when invalid get_connections
 request is made on invalid port handle. get_connections() method is expected
 to return the amount of found connections. When port handle is invalid it
 returns -1 indicating an error.

if (_io->nth (n)->get_connections (connections) == 0) {
			if (!(*chan)->source.name.empty()) {
				// _source->disable_metering ();
			}
			(*chan)->source.name = string();
		} else {
			(*chan)->source.name = connections[0];
		}

-1 is the case which is not handled correctly here.
---
 libs/ardour/port.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc
index 19bebd103f..e3664874b9 100644
--- a/libs/ardour/port.cc
+++ b/libs/ardour/port.cc
@@ -135,7 +135,12 @@ Port::get_connections (std::vector<std::string> & c) const
 		return c.size();
 	}
 
-	return port_engine.get_connections (_port_handle, c);
+    if (_port_handle) {
+        port_engine.get_connections (_port_handle, c);
+        return c.size();
+    }
+    
+    return 0;
 }
 
 int