Following a manual code review, fix some local variables overriding global variables, a few leaks, and additional nil setting/checking to prevent overreleases or releases of random areas of memory.

12 files changed, 40 insertions, 18 deletions

diff --git a/Source/CMCopyTable.m b/Source/CMCopyTable.m
index cc917dba..dc9cc770 100644
--- a/Source/CMCopyTable.m
+++ b/Source/CMCopyTable.m
@@ -85,7 +85,7 @@ NSInteger MENU_EDIT_COPY_AS_SQL      = 2002;
 	}
 	if ( [anItem tag] == MENU_EDIT_COPY_AS_SQL )
 	{
-		return (columnDefinitions != NULL && [self selectedRow] > -1);
+		return (columnDefinitions != nil && [self selectedRow] > -1);
 	}
 	return YES;
 }
diff --git a/Source/CustomQuery.m b/Source/CustomQuery.m
index 73db6bc6..1427291c 100644
--- a/Source/CustomQuery.m
+++ b/Source/CustomQuery.m
@@ -3101,6 +3101,7 @@
 		sortColumn = nil;
 		selectionButtonCanBeEnabled = NO;
 		cqColumnDefinition = nil;
+		favoritesManager = nil;
 
 		tableRowsSelectable = YES;
 		selectionIndexToRestore = nil;
@@ -3249,6 +3250,7 @@
 	if (sortField) [sortField release];
 	if (cqColumnDefinition) [cqColumnDefinition release];
 	if (selectionIndexToRestore) [selectionIndexToRestore release];
+	if (currentQueryRanges) [currentQueryRanges release];
 	
 	[super dealloc];
 }
diff --git a/Source/ImageAndTextCell.m b/Source/ImageAndTextCell.m
index 51834825..eb2f6678 100644
--- a/Source/ImageAndTextCell.m
+++ b/Source/ImageAndTextCell.m
@@ -9,6 +9,14 @@
 
 @implementation ImageAndTextCell
 
+- (id)init
+{
+	self = [super init];
+	image = nil;
+
+	return self;
+}
+
 - (void)dealloc {
 	[image release];
 	image = nil;
diff --git a/Source/MGTemplateStandardMarkers.m b/Source/MGTemplateStandardMarkers.m
index 1bf00f7c..0cbc8c66 100644
--- a/Source/MGTemplateStandardMarkers.m
+++ b/Source/MGTemplateStandardMarkers.m
@@ -613,6 +613,7 @@
 	ifStack = [[NSMutableArray alloc] init];
 	[commentStack release];
 	commentStack = [[NSMutableArray alloc] init];
+	[cycles release];
 	cycles = [[NSMutableDictionary alloc] init];
 }
 
diff --git a/Source/SPAppController.m b/Source/SPAppController.m
index 5a515f02..23379761 100644
--- a/Source/SPAppController.m
+++ b/Source/SPAppController.m
@@ -67,6 +67,7 @@
 	[[SUUpdater sharedUpdater] setDelegate:self];
 	
 	prefsController = [[SPPreferenceController alloc] init];
+	aboutController = nil;
 	
 	// Register SPAppController as services provider
 	[NSApp setServicesProvider:self];
diff --git a/Source/SPDatabaseData.m b/Source/SPDatabaseData.m
index c3649328..78b4295e 100644
--- a/Source/SPDatabaseData.m
+++ b/Source/SPDatabaseData.m
@@ -217,7 +217,7 @@ const CHAR_SETS charsets[] =
 - (void)resetAllData
 {
 	if (characterSetEncoding != nil) {
-		[characterSetEncoding release]; 
+		[characterSetEncoding release], characterSetEncoding = nil; 
 	}
 	
 	[collations removeAllObjects];
diff --git a/Source/SPFieldEditorController.m b/Source/SPFieldEditorController.m
index 7b52bbf8..2db46a10 100644
--- a/Source/SPFieldEditorController.m
+++ b/Source/SPFieldEditorController.m
@@ -43,6 +43,7 @@
 		(void) [self window];
 		counter = 0;
 		maxTextLength = 0;
+		stringValue = nil;
 		
 		prefs = [NSUserDefaults standardUserDefaults];
 
@@ -262,7 +263,7 @@
 		else
 			[editSheet makeFirstResponder:editImage];
 		
-		[stringValue release];
+		[stringValue release], stringValue = nil;
 	}
 	
 	editSheetWillBeInitialized = NO;
diff --git a/Source/SPNarrowDownCompletion.m b/Source/SPNarrowDownCompletion.m
index 6667f848..5f01d128 100644
--- a/Source/SPNarrowDownCompletion.m
+++ b/Source/SPNarrowDownCompletion.m
@@ -513,6 +513,7 @@
 				if(newFiltered) [newFiltered release];
 				NSLog(@"%@", @"Couldn't filter suggestion due to internal regexp error");
 				closeMe = YES;
+				return;
 			}
 			
 		}
diff --git a/Source/SPTableData.m b/Source/SPTableData.m
index 20a3dbd7..459406fc 100644
--- a/Source/SPTableData.m
+++ b/Source/SPTableData.m
@@ -313,9 +313,9 @@
 - (NSDictionary *) informationForTable:(NSString *)tableName
 {	
 	SPSQLParser *createTableParser, *fieldsParser, *fieldParser;
-	NSMutableArray *tableColumns, *fieldStrings, *definitionParts;
+	NSMutableArray *tableColumns, *fieldStrings;
 	NSMutableDictionary *tableColumn, *tableData;
-	NSString *encodingString;
+	NSString *encodingString = nil;
 	NSUInteger i, stringStart;
 	unichar quoteCharacter;
 
@@ -366,7 +366,6 @@
 	// table information.  Proceed further by parsing the field strings.
 	tableColumns = [[NSMutableArray alloc] init];
 	tableColumn = [[NSMutableDictionary alloc] init];
-	definitionParts = [[NSMutableArray alloc] init];
 	fieldParser = [[SPSQLParser alloc] init];
 	
 	NSCharacterSet *whitespaceAndNewlineSet = [NSCharacterSet whitespaceAndNewlineCharacterSet];
@@ -384,7 +383,6 @@
 			continue;
 		}
 		[tableColumn removeAllObjects];
-		[definitionParts removeAllObjects];
 
 		// If the first character is a quote character, this is a field definition.
 		if ([quoteSet characterIsMember:[fieldsParser characterAtIndex:0]]) {
@@ -535,9 +533,9 @@
 				if([parsedString length]>4) {
 					NSString *priFieldName = [[parsedString substringWithRange:NSMakeRange(2,[parsedString length]-4)] stringByReplacingOccurrencesOfString:@"``" withString:@"`"];
 					[tableData setObject:priFieldName forKey:@"primarykeyfield"];
-					for(id tableColumn in tableColumns)
-						if([[tableColumn objectForKey:@"name"] isEqualToString:priFieldName]) {
-							[tableColumn setObject:[NSNumber numberWithInteger:1] forKey:@"isprimarykey"];
+					for(id theTableColumn in tableColumns)
+						if([[theTableColumn objectForKey:@"name"] isEqualToString:priFieldName]) {
+							[theTableColumn setObject:[NSNumber numberWithInteger:1] forKey:@"isprimarykey"];
 							break;
 						}
 				}
@@ -550,9 +548,9 @@
 					NSArray *uniqueFieldNames = [parsedString componentsSeparatedByString:@"`,`"];
 					for(NSString* uniq in uniqueFieldNames) {
 						NSString *uniqField = [[uniq stringByReplacingOccurrencesOfRegex:@"^\\(`|`\\)" withString:@""] stringByReplacingOccurrencesOfString:@"``" withString:@"`"];
-						for(id tableColumn in tableColumns)
-							if([[tableColumn objectForKey:@"name"] isEqualToString:uniqField]) {
-								[tableColumn setObject:[NSNumber numberWithInteger:1] forKey:@"unique"];
+						for(id theTableColumn in tableColumns)
+							if([[theTableColumn objectForKey:@"name"] isEqualToString:uniqField]) {
+								[theTableColumn setObject:[NSNumber numberWithInteger:1] forKey:@"unique"];
 								break;
 							}
 					}
@@ -567,7 +565,6 @@
 	}
 	[fieldStrings release];
 	[fieldsParser release];
-	[definitionParts release];
 	[tableColumn release];
 
 	// Extract the encoding from the table properties string - other details come from TABLE STATUS.
@@ -610,7 +607,7 @@
 							   tableName, [mySQLConnection getLastErrorMessage]]);
 		}
 		[tableColumns release];
-		[encodingString release];
+		if (encodingString) [encodingString release];
 
 		return nil;
 	}
@@ -707,6 +704,7 @@
 	}
 
 	// Retrieve the table syntax string
+	if (tableCreateSyntax) [tableCreateSyntax release], tableCreateSyntax = nil;
 	tableCreateSyntax = [[NSString alloc] initWithString:[[theResult fetchRowAsArray] objectAtIndex:1]];
 
 	// Retrieve the SHOW COLUMNS syntax for the table
diff --git a/Source/TableContent.m b/Source/TableContent.m
index 793883f8..4c9336d8 100644
--- a/Source/TableContent.m
+++ b/Source/TableContent.m
@@ -89,6 +89,7 @@
 		firstBetweenValueToRestore = nil;
 		secondBetweenValueToRestore = nil;
 		tableRowsSelectable = YES;
+		contentFilterManager = nil;
 
 		isFiltered = NO;
 		isLimited = NO;
diff --git a/Source/TableDocument.m b/Source/TableDocument.m
index 443cadbb..2d75a8d9 100644
--- a/Source/TableDocument.m
+++ b/Source/TableDocument.m
@@ -80,6 +80,8 @@
 		selectedDatabase = nil;
 		mySQLConnection = nil;
 		mySQLVersion = nil;
+		allDatabases = nil;
+		allSystemDatabases = nil;
 
 		printWebView = [[WebView alloc] init];
 		[printWebView setFrameLoadDelegate:self];
@@ -1043,7 +1045,7 @@
 	}
 	// Close error status sheet for OPTIMIZE, CHECK, REPAIR etc.
 	else if ([contextInfo isEqualToString:@"statusError"]) {
-		if(statusValues) [statusValues release]; statusValues = nil;
+		if (statusValues) [statusValues release], statusValues = nil;
 	}
 
 }
@@ -1200,7 +1202,7 @@
  */
 - (void) showTaskProgressWindow:(NSTimer *)theTimer
 {
-	[taskDrawTimer release], taskDrawTimer = nil;
+	if (taskDrawTimer) [taskDrawTimer invalidate], [taskDrawTimer release], taskDrawTimer = nil;
 
 	// Center the task window and fade it in
 	[self centerTaskWindow];
@@ -1775,6 +1777,7 @@
 						   contextInfo:NULL];
 	} else {
 		message = NSLocalizedString(@"MySQL said:",@"mysql said message");
+		if (statusValues) [statusValues release], statusValues = nil;
 		statusValues = [result retain];
 		NSAlert *alert = [[NSAlert new] autorelease];
 		[alert setInformativeText:message];
@@ -1850,6 +1853,7 @@
 						   contextInfo:NULL];
 	} else {
 		message = NSLocalizedString(@"MySQL said:",@"mysql said message");
+		if (statusValues) [statusValues release], statusValues = nil;
 		statusValues = [result retain];
 		NSAlert *alert = [[NSAlert new] autorelease];
 		[alert setInformativeText:message];
@@ -1925,6 +1929,7 @@
 						   contextInfo:NULL];
 	} else {
 		message = NSLocalizedString(@"MySQL said:",@"mysql said message");
+		if (statusValues) [statusValues release], statusValues = nil;
 		statusValues = [result retain];
 		NSAlert *alert = [[NSAlert new] autorelease];
 		[alert setInformativeText:message];
@@ -1999,6 +2004,7 @@
 						   contextInfo:NULL];
 	} else {
 		message = NSLocalizedString(@"MySQL said:",@"mysql said message");
+		if (statusValues) [statusValues release], statusValues = nil;
 		statusValues = [result retain];
 		NSAlert *alert = [[NSAlert new] autorelease];
 		[alert setInformativeText:message];
@@ -2073,6 +2079,7 @@
 						   contextInfo:NULL];
 	} else {
 		message = NSLocalizedString(@"MySQL said:",@"mysql said message");
+		if (statusValues) [statusValues release], statusValues = nil;
 		statusValues = [result retain];
 		NSAlert *alert = [[NSAlert new] autorelease];
 		[alert setInformativeText:message];
@@ -2128,6 +2135,7 @@
 						   contextInfo:NULL];
 	} else {
 		NSDictionary *result = [theResult fetch2DResultAsType:MCPTypeDictionary];
+		if (statusValues) [statusValues release], statusValues = nil;
 		statusValues = [result retain];
 		NSAlert *alert = [[NSAlert new] autorelease];
 		[alert setInformativeText:[NSString stringWithFormat:NSLocalizedString(@"Checksums of %@",@"Checksums of %@ message"), what]];
diff --git a/Source/TableSource.m b/Source/TableSource.m
index 7c5f6ab4..c5e2a4b8 100644
--- a/Source/TableSource.m
+++ b/Source/TableSource.m
@@ -118,6 +118,7 @@ loads aTable, put it in an array, update the tableViewColumns and reload the tab
 				nil, nil, [NSApp mainWindow], self, nil, nil, nil,
 				[NSString stringWithFormat:NSLocalizedString(@"An error occurred while retrieving information.\nMySQL said: %@", @"message of panel when retrieving information failed"),
 				   errorMessage]);
+		if (tableSourceResult) [tableSourceResult release];
 		return;
 	}
 
@@ -148,7 +149,7 @@ loads aTable, put it in an array, update the tableViewColumns and reload the tab
 				nil, nil, [NSApp mainWindow], self, nil, nil, nil,
 				[NSString stringWithFormat:NSLocalizedString(@"An error occurred while retrieving information.\nMySQL said: %@", @"message of panel when retrieving information failed"),
 				   errorMessage]);
-
+		if (indexResult) [indexResult release];
 		return;
 	}
 	[indexResult setReturnDataAsStrings:YES];