#15312: fix integer overflow (?) in conversion of powersums to Schur functions
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Reporter: zabrocki | Owner:
Type: defect | Status: new
Priority: critical | Milestone: sage-5.13
Component: combinatorics | Resolution:
Keywords: symmetric functions, | Merged in:
symmetrica, memleak | Reviewers:
Authors: | Work issues:
Report Upstream: N/A | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by zabrocki):
Here is something integeresting^(tm)^, if I put the `freeall(a)` and
`freeall(b)` '''after''' the `scan(POW_SYM,c)` line then I get the correct
answers. As in...
{{{
#include "def.h"
#include "macro.h"
ANFANG
scan(POW_SYM,a);
t_POWSYM_SCHUR(a, b);
scan(POW_SYM,c);
freeall(a);
freeall(b);
t_POWSYM_SCHUR(c, d);
println(d);
println(d);
a = callocobject();
b = callocobject();
ENDE
}}}
This means that the problem seems to be in the initialization of `c`
(through the `scan`) and ''not'' in the calculation of `d`.
--
Ticket URL: <http://trac.sagemath.org/ticket/15312#comment:11>
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