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[Bug math/15487] New: math tests fail with older compilers on i386


http://sourceware.org/bugzilla/show_bug.cgi?id=15487

             Bug #: 15487
           Summary: math tests fail with older compilers on i386
           Product: glibc
           Version: 2.18
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
        AssignedTo: unassigned@sourceware.org
        ReportedBy: andi-bz@firstfloor.org
    Classification: Unclassified


Created attachment 7030
  --> http://sourceware.org/bugzilla/attachment.cgi?id=7030
gcc 4.6 failure 1

On a 32bit build I get a number of test suite failures in the math test suite
64bit is ok.

This started sometime a few months ago (?) I can bisect when there is interest.

They seem to be correlated with using older gcc. The failing systems have gcc
4.5 and gcc 4.6 (older Fedora). When I build with gcc 4.8 there are no
failures.

Interestingly the failures are not the same between 4.5 and 4.6

gcc 4.5.1 (FC14) fails test-double.out  test-ifloat.out
gcc 4.6.3 (FC16) fails test-float.out  test-ifloat.out

I'm attaching the test outputs.

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