UIView drawRect leak with CoreText - iphone

Question

I have a leak that I can't track down. I am new to CoreText (and C in general) so please be gentle! The static analyser doesn't show any problems but Instruments does in this method:
- (void)drawAttributedStringInBubbleInContext:(CGContextRef)context {
static CGFloat const kTextInset = 10;
// Add the text to the bubble using an ellipse path inside the main speech bubble if the text property is set
if (text) {
// Create an attributed string from the text property
NSMutableAttributedString *bubbleText = [[NSMutableAttributedString alloc] initWithString:text];
// Justify the text by adding a paragraph style
CFIndex stringLength = CFAttributedStringGetLength((CFAttributedStringRef)bubbleText);
CTTextAlignment alignment = kCTJustifiedTextAlignment;
CTParagraphStyleSetting _settings[] = {
{kCTParagraphStyleSpecifierAlignment, sizeof(alignment), &alignment}
};
CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(_settings, sizeof(_settings) / sizeof(_settings[0]));
CFRange stringRange = CFRangeMake(0, stringLength);
CFAttributedStringSetAttribute((CFMutableAttributedStringRef)bubbleText, stringRange, kCTParagraphStyleAttributeName, paragraphStyle);
CFRelease(paragraphStyle);
// Layout the text within an elliptical frame
CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((CFAttributedStringRef)bubbleText);
// Create elliptical path that is inset from the frame of the view
CGMutablePathRef path = CGPathCreateMutable();
CGRect drawingRect = self.bounds;
drawingRect.origin.x = kTextInset;
drawingRect.origin.y = kTextInset;
drawingRect.size.width -= 2 * kTextInset;
drawingRect.size.height -= 2 * kTextInset;
CGPathAddEllipseInRect(path, NULL, drawingRect);
// Create a text frame from the framesetter and the path
CTFrameRef textFrame = CTFramesetterCreateFrame(framesetter,CFRangeMake(0,0), path, NULL);
// Draw the text frame in the view's graphics context
CTFrameDraw(textFrame, context);
// Clean up
CGPathRelease(path);
CFRelease(framesetter);
[bubbleText release];
}
}
The main culprit according to Instruments is the CTFrameRef textFrame = line, although I thought I have released everything properly.

Answer 1

That is the culprit, the Core Foundation rule for Create methods are you have to release them. Apple releases it properly in an example in the Core Text Programming Guide.
// Clean up
CGPathRelease(path);
CFRelease(framesetter);
CFRelease(textFrame);