#5344: [with patch, needs review] Singular/omalloc "double free" problem
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Reporter: GeorgSWeber | Owner: mabshoff
Type: defect | Status: new
Priority: blocker | Milestone: sage-3.4
Component: packages | Keywords:
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Changes (by mabshoff):
* cc: robertwb (added)
Comment:
Georg,
this is a know problem when using the system malloc with Singular, i.e.
the above problem happens also on OSX in 64 bit mode where we already
build Singular with the system malloc per default. There are more problems
than four double frees at exit. The problem is that
* the destructor for Rational in Givaro is not called, but the one in
Singular
* the same applies to some mpf_* function
* What is even worst is that Sage's minpoly is not called, but instead
libsingular's without the ring check
Due to the above about 25 doctests will segafault, so this is more than a
cosmetic issue. I am clueless why this happens, but I suspect a scope
issue in Cython.
RobertWB: thoughts?
Cheers,
Michael
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5344#comment:1>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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