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From: "fxcoudert at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/63610] Fixing the libtool bug for Yosemite (darwin14)
Date: Tue, 11 Nov 2014 09:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63610

Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-apple-darwin14
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-11-11
                 CC|                            |fxcoudert at gcc dot gnu.org,
                   |                            |iains at gcc dot gnu.org
               Host|                            |x86_64-apple-darwin14
            Summary|OSX 10.10 (Yosemite)        |Fixing the libtool bug for
                   |segfault in MPIR testsuite  |Yosemite (darwin14)
                   |with -O0 or -O1             |
     Ever confirmed|0                           |1
              Build|                            |x86_64-apple-darwin14

--- Comment #11 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
(In reply to howarth from comment #7)
> I can confirm that there are many regressions (particularly in the fortran
> test suite) on Yosemite due to the libtool bug

Patch submitted to fix the configure files in GCC tree:
https://gcc.gnu.org/ml/gcc-patches/2014-11/msg00930.html

But it doesn't seem to make much difference in the test results:
https://gcc.gnu.org/ml/gcc-testresults/2014-11/msg01024.html