Re: MacIntel apps behaves weirdly when compiled with -02 not -01
Re: MacIntel apps behaves weirdly when compiled with -02 not -01
- Subject: Re: MacIntel apps behaves weirdly when compiled with -02 not -01
- From: Eric Albert <email@hidden>
- Date: Thu, 12 Jan 2006 15:19:17 -0800
On Jan 12, 2006, at 9:40 AM, Olivier Tristan wrote:
I'm having some trouble porting my application to macintel.
When building my application with an optimization settings greater
to -01, my application begin to behave weirdly.
It works perfectly fine when I use the -01 optimization setting.
Of course, this application works fine on a standard mac and on
wintel using -03 (The problem do not seems related to endianess).
Currently the problem are that the UI is not displayed and I got
weird sound (my app is a synth).
Does anyone already had the same problem ?
Any Ideas ?
I'm not aware of any code generation issues with the shipping version
of the compiler on the new Intel-based Macs, so it's unlikely you're
seeing that. There are a few compiler fixes in Xcode 2.2.1 -- the
version that ships with those systems and which'll be posted shortly
-- so there's a slight chance you may be hitting the things in Xcode
2.2 that those fixed, but that's also unlikely.
What we've seen much more often with things like this is that there
may be an uninitialized variable in your code or non-zeroed memory or
something like that and it just doesn't show up on PowerPC or with
other compilers. You'll just have to debug it. Once you have a
simplified test case or at least a better understanding of what's not
working, you'll either be able to track down the problem or have
enough information to file a bug report.
-Eric
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