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-rw-r--r--libs/ardour/control_protocol_manager.cc6
1 files changed, 6 insertions, 0 deletions
diff --git a/libs/ardour/control_protocol_manager.cc b/libs/ardour/control_protocol_manager.cc
index 6583869fed..8f2f026d55 100644
--- a/libs/ardour/control_protocol_manager.cc
+++ b/libs/ardour/control_protocol_manager.cc
@@ -495,6 +495,12 @@ ControlProtocolManager::register_request_buffer_factories ()
Glib::Threads::Mutex::Lock lm (protocols_lock);
for (list<ControlProtocolInfo*>::iterator i = control_protocol_info.begin(); i != control_protocol_info.end(); ++i) {
+
+ if ((*i)->descriptor == 0) {
+ warning << string_compose (_("Control protocol \"%1\" has no descriptor"), (*i)->name) << endmsg;
+ continue;
+ }
+
if ((*i)->descriptor->request_buffer_factory) {
EventLoop::register_request_buffer_factory ((*i)->descriptor->name, (*i)->descriptor->request_buffer_factory);
}