On Wednesday 21 Mar 2012, William Stein wrote: > Hi Proud Sage Developers, > > At the current Sage workshop some people (me, David Roe, Jen > Balakrishnan, etc.) have made a stopgap function and identified Trac > tickets describing "Bugs silently producing wrong answers". So far > they listed 7 of them: http://trac.sagemath.org/sage_trac/report/79 > > Do *you* know of such a bug in Sage that has not been classified as > such? Several of the ones listed below have been *known* for over 3 > years. > > * Trac 12718: > > Somebody just pointed out this *doooozie* to me at ICERM [2] a few minutes > ago > > sage: R.<x,y> = QQ[] > sage: n=1000; f = x^n; f.subs(x = x^n) > x^1000000 > sage: n=100000; f = x^n; f.subs(x = x^n) > x^1410065408*y^2
This is not a Singular bug but a bug in code wrote, I have a fix almost ready. However, I ran into this Singular bug when looking at http://trac.sagemath.org/sage_trac/ticket/7795 > ring r = 3,(T,z),dp; > poly f = z^3 + T*z; > f^(3^15); Segmentation fault It doesn't seem to be a simple "catch the overflow" bug. Any ideas? Cheers, Martin -- name: Martin Albrecht mail: martinralbre...@googlemail.com _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 _otr: 47F43D1A 5D68C36F 468BAEBA 640E8856 D7951CCF _www: http://martinralbrecht.wordpress.com/ _jab: martinralbre...@jabber.ccc.de -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
