#12873: Clear MMX state in i686 Solaris longjmp()
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Reporter: jdemeyer | Owner: drkirkby
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: solaris | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors: Jeroen Demeyer
Merged in: | Dependencies:
Stopgaps: |
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The libc `setjmp`/`longjmp` functions of OpenSolaris 06.2009-32 on i686
hardware do not fully restore the x87 FPU state, in particular when MMX
instructions have been used. The proposed solution is to execute the
`EMMS` instruction before `longjmp()`. For more context, see #12777 where
this bug was discovered.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12873>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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