help with logic error
help with logic error
- Subject: help with logic error
- From: 2551 <email@hidden>
- Date: Thu, 12 Dec 2013 18:52:18 +0700
Hi folks
I need some help with a logic error the Static Analyzer is throwing up. I didn’t write this code (in fact, its a piece of Apple sample code I’m resuing in my project), and I’m not quite sure how to correct it. It goes like this, where the numbers [1], [2], [3], [4] represent the end points of the analyzer's blue arrows:
[1] const NSRect bounds = [self bounds];
[backgroundColor set];
NSRectFill(dirtyRect);
const NSRulerOrientation orientation = [self orientation];
NSRect borderLineRect;
[2] switch (orientation) {
case NSVerticalRuler:
borderLineRect = NSMakeRect(NSMaxX(bounds)-1.0, 0, 1.0, NSHeight(bounds));
break;
case NSHorizontalRuler:
borderLineRect = NSMakeRect(0, 0, NSWidth(bounds), 1.0);
break;
}
[3]if [4]([self needsToDrawRect:borderLineRect]) {
[[backgroundColor shadowWithLevel:0.4] set];
NSRectFill(borderLineRect);
The error message says, in full: Passed-by-value struct argument contains uninitialized data (e.g., via the field chain: 'origin.x’).
Thoughts much appreciated.
Phil
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