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SenTestingKit, NSTask, and OBJC_DISABLE_GC
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SenTestingKit, NSTask, and OBJC_DISABLE_GC


  • Subject: SenTestingKit, NSTask, and OBJC_DISABLE_GC
  • From: Andy Mroczkowski <email@hidden>
  • Date: Wed, 8 Oct 2008 17:33:52 -0400

Hi everyone. This is a weird one, but I've hit a real roadblock here, so any insight would really be appreciated.

I followed Chris Hanson's nice instructions for setting up a unit test bundle for an application:
http://chanson.livejournal.com/120263.html


It all appears to be set up correctly. So as step 0, I build my new unit testing target without actually adding any tests, just to make everything is A-OK.

My application builds and runs fine, but doesn't start up as I expect. After some investigation I find that the problem is related to an NSTask it launches as part of the startup process. Its a basic shell command whose output is just read into a string. However when built and run through the testing bundle, the following output occurs on stderr of my NSTask sub-process:

objc[37170]: GC: forcing GC OFF because OBJC_DISABLE_GC is set
objc[37170]: GC: forcing GC OFF because OBJC_DISABLE_GC is set
objc[37170]: GC: forcing GC OFF because OBJC_DISABLE_GC is set

This is throwing off the interpretation of the shell task output. I don't want to just suppress stderr, because other useful information could be present.

How do I suppress this "GC: forcing GC OFF because OBJC_DISABLE_GC is set" so it won't appear in the stderr output of my NSTask?

Note, there are some similarities to these threads, but they don't really address the issue I'm having:
http://www.cocoabuilder.com/archive/message/xcode/2008/7/12/23081
http://www.cocoabuilder.com/archive/message/xcode/2008/10/6/25055


halp.

- Andy

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