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Help! program runs differently under debug than not
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Help! program runs differently under debug than not


  • Subject: Help! program runs differently under debug than not
  • From: Rick Mann <email@hidden>
  • Date: Wed, 21 Jun 2006 15:15:44 -0700

Yes, I'm familiar with how this can happen. Thing is, before a recent forced restart, it was behaving normally. If I debug my app, with no breakpoints set, it gets a broken pipe error. If I just run it, it runs correctly.

I don't even know where to begin, to determine what setting might be different. I find it incessantly confusing that XCode changes its state based on if I'm running or debugging (I'm very used to CW's notion that you're either running or debugging, something you set once).

Anyway, it's really puzzling, and since settings can be spread out in so many places, it's hard to compare the debug ones to the non-debug ones.

I'll try to figure out which pipe, exactly, is breaking. This app (I didn't write it) forks a child and then uses a pipe to communicate with it. The child sits in a loop passing bytes on to a USB device (and back).

Once I solve this problem, the really hard one begins: trying to debug the child (gdb doesn't handle fork very well at all). I really need to be able to step through the child, and I don't know how I'm going to accomplish that. sigh

--
Rick


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