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Re: Xcode 3.2 -- Two more bugs??
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Re: Xcode 3.2 -- Two more bugs??

Exactly. In Xcode 3.1, Xcode would catch the crash and then pass the exception to gdb, but that was a lossy process. In 3.2, we let gdb run the program, and that way we can tell exactly what happened when the program dies. But that means if you have a program that doesn't run under the debugger, you now need to uncheck the "Auto-attach debugger on crash" to restore the old behavior.

Jim

On Aug 31, 2009, at 12:02 PM, Jens Alfke wrote:


On Aug 31, 2009, at 11:51 AM, Jim Ingham wrote:

No it doesn't mean that. When Xcode is "running" without setting any breakpoints, there are a lot of the pieces of information gdb normally gathers that we know it doesn't need. So we cooked up some startup settings that tell gdb not to notice things like shared library loading and not to read any symbol information at all, etc. If you only need to use gdb as a program launcher not a debugger, it doesn't add much overhead. It's only when you want to do things like look at symbols or set breakpoints that you start to pay for having gdb around.

I think I understand now. So is this mode new in 3.2? I just tried running an app in Xcode 3.1 in the "Breakpoints disabled" mode, and there is no gdb process running at all.

So far Xcode is by far my top reason for wanting to upgrade to 10.6.

—Jens 

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References: 


 >Xcode 3.2 -- Two more bugs?? (From: "McLaughlin, Michael P." <email@hidden>)


 >Re: Xcode 3.2 -- Two more bugs?? (From: Joar Wingfors <email@hidden>)


 >Re: Xcode 3.2 -- Two more bugs?? (From: Jim Ingham <email@hidden>)


 >Re: Xcode 3.2 -- Two more bugs?? (From: Jens Alfke <email@hidden>)


 >Re: Xcode 3.2 -- Two more bugs?? (From: Jim Ingham <email@hidden>)


 >Re: Xcode 3.2 -- Two more bugs?? (From: Jens Alfke <email@hidden>)























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