Add sanity checks to try to track down crash

sources/PTYSession.m

@@ -2500,6 +2500,7 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
         [self setProfile:updatedProfile];
         return;
     }
+    [self sanityCheck];
     // Copy non-overridden fields over.
     NSMutableDictionary *temp = [NSMutableDictionary dictionaryWithDictionary:_profile];
@@ -2538,6 +2539,15 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
     [[ProfileModel sessionsInstance] setBookmark:temp withGuid:temp[KEY_GUID]];
     [self setPreferencesFromAddressBookEntry:temp];
     [self setProfile:temp];
+    [self sanityCheck];
+}
+
+- (void)sanityCheck {
+    if (_isDivorced) {
+        NSDictionary *sessionsProfile =
+        [[ProfileModel sessionsInstance] bookmarkWithGuid:_profile[KEY_GUID]];
+        assert(sessionsProfile);
+    }
 }
 - (void)sessionProfileDidChange
@@ -2547,6 +2557,8 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
     }
     NSDictionary *updatedProfile =
         [[ProfileModel sessionsInstance] bookmarkWithGuid:_profile[KEY_GUID]];
+    [self sanityCheck];
+
     NSMutableSet *keys = [NSMutableSet setWithArray:[updatedProfile allKeys]];
     [keys addObjectsFromArray:[_profile allKeys]];
     for (NSString *aKey in keys) {
@@ -2567,10 +2579,12 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
     [self setProfile:updatedProfile];
     [[NSNotificationCenter defaultCenter] postNotificationName:kSessionProfileDidChange
                                                         object:_profile[KEY_GUID]];
+    [self sanityCheck];
 }
 - (BOOL)reloadProfile
 {
+    [self sanityCheck];
     DLog(@"Reload profile for %@", self);
     BOOL didChange = NO;
     NSDictionary *sharedProfile = [[ProfileModel sharedInstance] bookmarkWithGuid:_originalProfile[KEY_GUID]];
@@ -2592,6 +2606,7 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
     }
     _textview.badgeLabel = [self badgeLabel];
+    [self sanityCheck];
     return didChange;
 }
@@ -3605,6 +3620,7 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
                                      toName:profile[KEY_NAME]];
         _tmuxTitleOutOfSync = NO;
     }
+    [self sanityCheck];
 }
 - (void)synchronizeTmuxFonts:(NSNotification *)notification
@@ -3686,6 +3702,7 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
 - (void)setSessionSpecificProfileValues:(NSDictionary *)newValues
 {
+    [self sanityCheck];
     if (!_isDivorced) {
         [self divorceAddressBookEntryFromPreferences];
     }
@@ -3745,6 +3762,7 @@ static NSTimeInterval kMinimumPartialLineTriggerCheckInterval = 0.5;
     [_overriddenFields removeAllObjects];
     [_overriddenFields addObjectsFromArray:@[ KEY_GUID, KEY_ORIGINAL_GUID] ];
     [self setProfile:[[ProfileModel sessionsInstance] bookmarkWithGuid:guid]];
+    [self sanityCheck];
     return guid;
 }