iPhone development: pointer being freed was not allocated

Question

i got this message from the debugger:

Pixture(1257,0xa0610500) malloc: *** error for object 0x21a8000: pointer being freed was not allocated
*** set a breakpo         


        

Answer 1

I had the same issue with the following code.

-(void)adjustImageToImageView:(UIImage*)img{

float numPixels = 100;
float radius = 5;
UIGraphicsBeginImageContext(CGSizeMake(numPixels, numPixels));
CGContextRef c = UIGraphicsGetCurrentContext();

CGContextBeginPath(c);
CGContextMoveToPoint  (c, numPixels, numPixels/2);
CGContextAddArcToPoint(c, numPixels, numPixels, numPixels/2, numPixels,   radius);
CGContextAddArcToPoint(c, 0,         numPixels, 0,           numPixels/2, radius);
CGContextAddArcToPoint(c, 0,         0,         numPixels/2, 0,           radius);
CGContextAddArcToPoint(c, numPixels, 0,         numPixels,   numPixels/2, radius);
CGContextClosePath(c);

CGContextClip(c);

[img drawAtPoint:CGPointZero];
UIImage *converted = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
self.imageView.image = converted;   }

I took the function from the open source Twitterfon app.

When I was trying to fix the issue, I tried changing the last line to

self.imageView.image = [converted retain]

And that stopped the error messages in the console. I'm going to check this in Leaks soon to see whats happening.