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POMemory leak in CFAttributedStringRef
 

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    <p>I use the following method to draw text on a PDF document (context). Somehow instruments comes up with the following line leaking</p> <pre><code>CFAttributedStringRef currentText = CFAttributedStringCreate(NULL, stringRef, NULL); </code></pre> <p>Where i am release the stringRef. Here's the code (After the correct answers here's the updated/working code):</p> <pre><code>- (void)drawText:(NSString*)textToDraw inFrame:(CGRect)frameRect{ CFStringRef stringRef = (__bridge CFStringRef)textToDraw; // Prepare the text using a Core Text Framesetter CFAttributedStringRef currentText = CFAttributedStringCreate(NULL, stringRef, NULL); CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(currentText); CGMutablePathRef framePath = CGPathCreateMutable(); CGPathAddRect(framePath, NULL, frameRect); // Get the frame that will do the rendering. CFRange currentRange = CFRangeMake(0, 0); CTFrameRef frameRef = CTFramesetterCreateFrame(framesetter, currentRange, framePath, NULL); CGPathRelease(framePath); // Get the graphics context. CGContextRef currentContext = UIGraphicsGetCurrentContext(); // Put the text matrix into a known state. This ensures // that no old scaling factors are left in place. CGContextSetTextMatrix(currentContext, CGAffineTransformIdentity); // Core Text draws from the bottom-left corner up, so flip // the current transform prior to drawing. CGContextTranslateCTM(currentContext, 0, frameRect.origin.y*2); CGContextScaleCTM(currentContext, 1.0, -1.0); // Draw the frame. CTFrameDraw(frameRef, currentContext); CGContextScaleCTM(currentContext, 1.0, -1.0); CGContextTranslateCTM(currentContext, 0, (-1)*frameRect.origin.y*2); CFRelease(frameRef); //CFRelease(stringRef); The string shouldn't be released CFRelease(framesetter); //Added the next line: CFRelease(currentText); </code></pre> <p>}</p> <p>Tested it on a device as the simulator; it leaks</p>
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