XCode 4.4 harmful

[Craig Treleaven]

Bug report submitted:

Bug ID# 12327864.

Craig
(cc list trimmed)

At 11:33 PM -0700 9/18/12, Jeremy Sequoia wrote:
>Please definitely file a bug report at http://bugreport.apple.com
>
>The most likely culprit as to what changed is the compiler.  Can you 
>try using configure.compiler=macports-clang-3.1 (and 3.0 and 3.2) to 
>see how they fare.
>
>Do you know specifically which library / executable is broken?  
>
>On 09/18/12, Craig Treleaven <ctreleaven at cogeco.ca> wrote:
>
>>Hi:
>>
>>In case it helps others, it appears that XCode 4.4 is the cause of 
>>a run-time problem with mythtv-core.25.  To recap, for some users, 
>>one of Myth's programs, mythfrontend, would consistently segfault 
>>before the main window was drawn (with the crashed thread in 
>>libunwind):
>>
>><https://trac.macports.org/ticket/35934>https://trac.macports.org/ticket/35934
>>
>>One of the affected users, James George, put a tremendous amount of 
>>work into tracking down the issue.  We eventually determined that 
>>the code would run successfully if built with apple-gcc-4.2.  James 
>>has determined that code produced with XCode 4.3.3 works OK; XCode 
>>4.4.0+ leads to crashes.  Testing done on 10.7.4.
>>
>>There were no obvious errors reported in the XCode 4.4.0+ builds.
>>
>>Could someone identify what changed from 4.3.3 to 4.4.0 that might 
>>account for this?  Bonus points if you can put it in simple terms 
>>that I can follow!  ;)
>>
>>Craig


-- 
--
Craig Treleaven, CA -- Clearview Consulting
(905) 829-2054  ctreleaven at cogeco.ca