[lfs-dev] [lfs-book] [LFS Trac] #3552: GCC-4.9.0

Pierre Labastie pierre.labastie at neuf.fr
Mon Apr 28 14:15:53 PDT 2014


Le 28/04/2014 20:25, Bruce Dubbs a écrit :
> Charles Johnston wrote:
>> On 04/22/14 14:10, LFS Trac wrote:
>>> #3552: GCC-4.9.0
>>> --------------------+------------------------
>>>   Reporter:  Krejzi  |      Owner:  lfs-book@…
>>>       Type:  task    |     Status:  new
>>>   Priority:  normal  |  Milestone:  7.6
>>> Component:  Book    |    Version:  SVN
>>>   Severity:  normal  |   Keywords:
>>> --------------------+------------------------
>>>   http://ftp.gnu.org/gnu/gcc/gcc-4.9.0/
>>>
>>>   http://gcc.gnu.org/gcc-4.9/changes.html
>>>
>>
>> I think everyone should exercise a little caution with switching to 4.9.0
>> right away.  There is a code generation bug that results in flac generating
>> bad data, and who knows what else.  There is a fix on the gcc mainline
>> branch, but not on 4.9.x yet.  You could certainly cherry-pick it and have
>> it for the build until4.9.1 appears.
>>
>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60902
> 
> Thanks for pointing this out.  The fix appears to be at
> 
> http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/tree-ssa-threadedge.c?r1=209716&r2=209715&pathrev=209716
> 
> 
> If we don't get a new version soon, we can try using that as a patch.
> 
>   -- Bruce
I would say that the second fix in the bug report above should be applied too.

http://gcc.gnu.org/viewcvs/gcc/trunk/gcc/tree-ssa-threadedge.c?r1=209860&r2=209859&pathrev=209860

Pierre



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