Re: warning: control reaches end of non-void function when using @synchronized
Re: warning: control reaches end of non-void function when using @synchronized
- Subject: Re: warning: control reaches end of non-void function when using @synchronized
- From: Shaun Wexler <email@hidden>
- Date: Thu, 7 Sep 2006 13:41:13 -0700
On Sep 7, 2006, at 10:17 AM, Shawn Erickson wrote:
(...finally getting time to look into some minor issues I ran into
over the last few months, anyway...)
I use @synchronized in Objective-C++ built with Xcode 2.3 (using
ggc-4.0 [1] and have objective-c exceptions enabled) and I get
"warning: control reaches end of non-void function" when I specify
-Wall for the following code.
- (BlahParticipant*) getFirstOrganizer
{
@synchronized (self) {
return [[firstOrganizer copy] autorelease];
}
}
I may be thinking to much like Java but this seems like an incorrect
warning... I will file a defect shortly unless folks point out an
issue with the code.
It's a compiler/language bug. FTA, I wanted to point out that code
should spend the shortest time possible within critical sections. If
there's something that you can perform outside of the synchronized
block, do it before/after.
- (BlahParticipant *)getFirstOrganizer
{
BlahParticipant *firstCopy;
@synchronized(self) {
firstCopy = [firstOrganizer copy];
}
return [firstCopy autorelease];
}
--
Shaun Wexler
MacFOH
http://www.macfoh.com
Efficiency is intelligent laziness.
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