#11666: Upgrade MPFR to 3.1.0
--------------------------------+-------------------------------------------
Reporter: leif | Owner: leif
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-5.0
Component: packages | Keywords: sd36 sd32 MPFR spkg wishlist
sd35.5
Work_issues: correct doctests | Upstream: N/A
Reviewer: Paul Zimmermann | Author: Mike Hansen, Jean-Pierre
Flori
Merged: | Dependencies: #12171
--------------------------------+-------------------------------------------
Comment(by vbraun):
The segfault is from
{{{
sage: R = RealField(2147483647)
}}}
because MPFR contains code like
{{{
_srcs = (_srcprec + GMP_NUMB_BITS-1)/GMP_NUMB_BITS;
_dests = (_destprec + GMP_NUMB_BITS-1)/GMP_NUMB_BITS - _srcs;
}}}
This gives an int overflow when `prec=INT_MAX`, and soon after as segfault
because the buffer sizes are wrong.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11666#comment:56>
Sage <http://www.sagemath.org>
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