[Bug bootstrap/11932] [3.4/3.5 regression] Parallel bootstrap failure with sparc libiberty multilib

["neroden at twcny dot rr dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From neroden at twcny dot rr dot com  2004-02-05 00:27 -------
Subject: Re:  [3.4/3.5 regression] Parallel bootstrap
 failure with sparc libiberty multilib

ghazi at gcc dot gnu dot org wrote:
> ------- Additional Comments From ghazi at gcc dot gnu dot org  2004-02-04 17:04 -------
> I saw this bug again today on the 3.4 branch on sparc-sun-solaris2.7.
> 
> FYI, for me it only happens about once per month using -j10 or -j20 
> bootstraps.  So it's hard to say whether the mkinstalldirs patch fixes it for 
> sure.  I'll have to put the patch in my tree and let a couple of months go by 
> without seeing the failure to form an opinion. :-)
> 
> Another option would be to somehow serialize the creation of these directories 
> so we won't encounter the race condition.

That's harder to do correctly than it looks.  But worse, it amounts to 
pretty much the same thing as the mkinstalldirs patch, only done in lots 
of different places ad-hoc.  :-(  Which is why I prefer the 
mkinstalldirs change.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11932