Static Analyzer falsely finding an expression to be "always 0"

Question

I have a property, noteName, declared as follows:

@property (nonatomic,assign) IVNoteName noteName;

and defined as follows:

@synthesize noteName;

but when I attempt to use it, the static analyzer behaves strangely.

NSInteger noteNameOffsets[8] = {0,2,3,5,7,8,10};
midiValue += noteNameOffsets[[self noteName]]; //On this line,
//the analyzer tells me "The right operand to '+=' is always 0"

I have logged the value of [self noteName] in that method call, finding many sensible, non-zero values. Furthermore, the method this code is from works as intended.

Answer 1

This is no longer an issue in Xcode 4.2.