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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/57144] New: [4.9 regression] mpfr miscompiled after r198413
Date: Thu, 02 May 2013 14:59:00 -0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Keywords: build
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57144

             Bug #: 57144
           Summary: [4.9 regression] mpfr miscompiled after r198413
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: schwab@linux-m68k.org
                CC: law@gcc.gnu.org
        Depends on: 57124
            Target: ia64-*-*


r198413 is causing miscompilation of mpfr-2.4.2 on ia64, seen by a lot of
failures in its testsuite, some are looping infinitely.  This makes it
impossible to bootstrap with an in-tree mpfr, because the fortran compiler
hangs while calling mpfr_log10 from gfc_arith_init_1.

The patch in <http://permalink.gmane.org/gmane.comp.gcc.patches/285076> does
not help.