#12718: polynomial substitution overflow hell (libsingular bug?)
-------------------------------------+-------------------------------------
Reporter: was | Owner: malb
Type: defect | Status: needs_review
Priority: critical | Milestone: sage-6.3
Component: commutative | Resolution:
algebra | Merged in:
Keywords: sd59 | Reviewers: Volker Braun, William
Authors: Martin Albrecht | Stein
Report Upstream: N/A | Work issues:
Branch: u/malb/trac_12718 | Commit:
Dependencies: | 38c07da8745a467c2669ee70adab4e5fbb927876
| Stopgaps:
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Comment (by vbraun):
I'm getting a bunch of doctest errors, including
{{{
sage -t --long src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
**********************************************************************
File "src/sage/rings/polynomial/multi_polynomial_libsingular.pyx", line
3279, in
sage.rings.polynomial.multi_polynomial_libsingular.MPolynomial_libsingular.subs
Failed example:
try:
f.subs(x = x^n)
print "no overflow"
except OverflowError:
print "overflow"
Expected:
no overflow
Got:
x^1000000
no overflow
}}}
but really there is a bunch more. Did you run the tests?
--
Ticket URL: <http://trac.sagemath.org/ticket/12718#comment:22>
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