Clang static analyzer gives warning over autoreleased

result = [result stringByReplacingOccurrencesOfString:@"ç" withString:@"c"];

result = [result stringByReplacingOccurrencesOfString:@"Ç" withString:@"c"];

clang Static analyzer gives warning "Method returns an Objective-C object with a +0 retain count (non-owning reference)"

return [result autorelease];

" Object over-autoreleased: object was sent -autorelease but the obje开发者_JAVA百科ct has zero (locally visible) retain counts "

Do yo have any idea about this warning?

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stringByReplacingOccurrencesOfString returns an already autoreleased object.

You don't need to release or autorelease it.