From 64ebe659927a7d72828afed5d9d7ebd69220a179 Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Sun, 12 Apr 2020 12:02:56 -0400
Subject: [PATCH] Fix a crash when changing stack frames after disconnecting.

This was hitting:
Assertion failed: (_messageQueue), function -[ProtocolClient sendCommandWithFormat:handler:], file /Users/rsesek/Projects/MacGDBp/Source/ProtocolClient.m, line 85.
---
 CHANGES                     | 4 ++++
 Source/DebuggerBackEnd.m    | 2 ++
 Source/DebuggerController.m | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 4bd0c0c..deb1db6 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,10 @@
 MacGDBp                                                               CHANGE LOG
 ================================================================================
 
+2.0.2
+#####################
+- Fix: Crash when selecting stack frames after disconnecting.
+
 2.0.1
 #####################
 - Change: Draw the source view gutter in a way that is dark-mode compatible.
diff --git a/Source/DebuggerBackEnd.m b/Source/DebuggerBackEnd.m
index 6f8c3ca..bbdb045 100644
--- a/Source/DebuggerBackEnd.m
+++ b/Source/DebuggerBackEnd.m
@@ -126,6 +126,8 @@
 - (void)loadStackFrame:(StackFrame*)frame {
   if (frame.loaded)
     return;
+  if (!self.model.connected)
+    return;
 
   // Get the source code of the file. Escape % in URL chars.
   if ([frame.filename length]) {
diff --git a/Source/DebuggerController.m b/Source/DebuggerController.m
index 67875d8..a34a6b6 100644
--- a/Source/DebuggerController.m
+++ b/Source/DebuggerController.m
@@ -326,7 +326,7 @@
     NSLog(@"INVALID SELECTION");
   StackFrame* frame = [selection objectAtIndex:0];
 
-  if (!frame.loaded) {
+  if (!frame.loaded && self.model.connected) {
     [_connection loadStackFrame:frame];
     return;
   }
-- 
2.43.5