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Re: major 4.3.2 debugging regression
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Re: major 4.3.2 debugging regression


  • Subject: Re: major 4.3.2 debugging regression
  • From: Chris Lattner <email@hidden>
  • Date: Thu, 22 Mar 2012 11:16:32 -0700

On Mar 22, 2012, at 10:18 AM, Sean McBride wrote:

> Hi all,
>
> So I was excited to see a dot release of Xcode, hoping it would fix some of the many bugs... but, for me at least, it seems like a big fat regression so far.
>
> Compared to 4.3.1, linking my app seems to take 10x longer, but when it finally finished, Xcode just crashes when it starts the debug session, with:

This sounds really strange.  Please do file a bug, we need to investigate this.

There were two really minor bugs fixed in the compiler in 4.3.2, neither of which could affect this (one would cause the compiler to crash and one caused it to emit an error on legal code).  LLDB did change, but the changes are also very contained, focused on fixing the "ivar lookup" problem that many people experienced with the simulator and when debugging devices.

-Chris

>
>
> Crashed Thread:  17  <lldb session listener>
>
> Exception Type:  EXC_CRASH (SIGABRT)
> Exception Codes: 0x0000000000000000, 0x0000000000000000
>
> Application Specific Information:
> ProductBuildVersion: 4E2002
> objc[5376]: garbage collection is ON
> Assertion failed: (m_compile_unit_infos[i].oso_compile_unit_sp.get() == cu_sp.get()), function SetCompileUnit, file /SourceCache/lldb/lldb-112.1/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp, line 1099.
>
>
> I did 'Clean' and 'Clean Build Folder', and this repros every time.
>
> Does the assertion message give anyone a hint as to how I could workaround this?
>
> (I stuck with Xcode 3 during the 4.x betas all the way until 4.3, when I forced myself to update. I have to say, I hate Xcode 4.  Sorry.)
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng                 email@hidden
> Rogue Research                        www.rogue-research.com
> Mac Software Developer              Montréal, Québec, Canada
>
>
>
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