[Bug bootstrap/43170] gcc 4.5 20100218 bootstrap compare fails on os x 10.6

["danp57 at optonline dot net" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #24 from danp57 at optonline dot net  2010-04-16 13:26 -------
Subject: Re:  gcc 4.5 20100218 bootstrap compare fails on os x 10.6

In this case, I have found the bug consistently repeatable on multiple
machines, all running snow leopard up-to-date.  When built on my desk-top
machine there were no other applications running except for "TeamViewer" (I
built it from work).  The other builds were made without TeamViewer.  Browsers
on/off, doesn't matter.

I *have* a build that works -- I built it with gcc-4.4.3 with no problem.  The
difficulty is with Apple's gcc distribution.  As I pointed out earlier, I'd be
struggling if I didn't have a new version of gcc on-board.  The only thing I
did not try is to see if I used a gcc-4.5.0 build with --disable-bootstrap from
Apple's gcc to rebuild gcc-4.5.0 with itself...  Even then, I'd be somewhat
worried that the then consistent compiler might be producing code at variance
with builds on other operating systems yielding inexplicable bugs or bugs that
other people could not reproduce on their platforms.

Best,
Dan




On Apr 16, 2010, at 8:07 AM, dominiq at lps dot ens dot fr wrote:

> 
> 
> ------- Comment #23 from dominiq at lps dot ens dot fr  2010-04-16 12:07 -------
>> PS> This will block any direct or first attempt to build gcc by Mac owners
>> unless they try builds of intermediate versions of gcc.
> 
> Except for the "funny" state of my macbook before my last reboot, the failure
> is quite exceptional. My usual strategy, is to restart from a clean directory
> (the only time I have had two consecutive failures I removed the libgomp dirs
> in stage2 and 3 for both 32 and 64 bit modes and restarted from that state and
> it worked, modulo the "funny" state it regtested fine).
> 
> One possible temporary fix would be to retry the failing test while configuring
> libgomp.
> 
> Last thing I have forgotten to ask. Many failures occured while having Safari
> open and may browsing pages using Flash (I got intermittent messages asking to
> close Flash because it slows down the system).
> 
> 
> -- 
> 
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43170
> 
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43170