#15214: singular bus error
---------------------------+-----------------------------------------------
Reporter: felixs | Owner:
Type: defect | Status: new
Priority: critical | Milestone: sage-5.12
Component: packages: | Keywords: singular segfault bus error
standard | Authors: Felix Salfelder
Merged in: | Report Upstream: N/A
Reviewers: | Branch:
Work issues: | Dependencies:
Commit: |
Stopgaps: |
---------------------------+-----------------------------------------------
During singular documentation build, the file
`Definition_of_a_user_defined_type.sing` is executed. This triggers a bus
error with singular (3-1-5.p8) from sage 5.12-beta5, but works with
singular (3-1-5.p4) from 5.8. Looks like a regression.
The contents of that file.
{{{
newstruct("nt","int a,poly b,string c");
nt A;
nt B;
A.a=3;
A.c=string(A.a);
B=A;
newstruct("t2","nt","string c");
t2 C; C.c="t2-c";
A=C;
typeof(A);
A;
// a motivating example ------------------------------------------
newstruct("IDEAL","ideal I,proc prettyprint");
newstruct("HOMOGENEOUS_IDEAL","IDEAL","intvec weights,proc
prettyprint");
proc IDEAL_pretty_print(IDEAL I)
{
"ideal generated by";
I.I;
}
proc H_IDEAL_pretty_print(HOMOGENEOUS_IDEAL I)
{
"homogeneous ideal generated by";
I.I;
"with weights";
I.weights;
}
proc p_print(IDEAL I) { I.prettyprint(I); }
ring r;
IDEAL I;
I.I=ideal(x+y2,z);
I.prettyprint=IDEAL_pretty_print;
HOMOGENEOUS_IDEAL H;
H.I=ideal(x,y,z);
H.prettyprint=H_IDEAL_pretty_print;
H.weights=intvec(1,1,1);
p_print(I);
p_print(H);
}}}
A session (with p8 on 5.12 on sage.math), clearly fails because of 10202.
{{{
$ singular /tmp/Definition_of_a_user_defined_type.sing
SINGULAR /
Development
A Computer Algebra System for Polynomial Computations / version
3-1-5
0<
by: W. Decker, G.-M. Greuel, G. Pfister, H. Schoenemann \ Jul 2012
FB Mathematik der Universitaet, D-67653 Kaiserslautern \
t2
c=t2-c
c=
b=??
a=0
Singular : signal 11 (v: 3150):
current line:>> I.prettyprint(I); <<
Segment fault/Bus error occurred at aa9aec because of 10202 (r:1379708681)
please inform the authors
trying to restart...
Auf Wiedersehen.
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15214>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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