#13413: fix integer overflow (?) in conversion of powersums to Schur functions
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Reporter: saliola | Owner: sage-
Type: defect | combinat
Priority: critical | Status: new
Component: combinatorics | Milestone: sage-5.13
Keywords: symmetric functions, | Resolution:
symmetrica, memleak | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by tscrim):
* cc: tscrim (added)
Comment:
I shouldn't be too rusty with my C, but this might take a combined effort
at Sage Days to fully complete it. I'll take a look at the code as well.
Here's my two guesses about the problem from the discussion:
- It is an overflow error and the big fix will be to convert Symmetrica to
use mpz instead of the usual machine integers.
- Symmetrica is using its own high precision integers (perhaps with a
fixed maximum size) and it's overflowing that block of memory.
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Ticket URL: <http://trac.sagemath.org/ticket/13413#comment:16>
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