#20850: AdditiveMagmas.ParentMethods.summation calls _add_ without checking
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Reporter: jdemeyer | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.3
Component: categories | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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In `src/sage/categories/additive_magmas.py`, there is
{{{
class AdditiveMagmas(Category_singleton):
class ParentMethods:
def summation(self, x, y):
return x._add_(y)
}}}
It's dangerous to call `_add_` without checking. Either this should just
be `x + y`, or there should be type checking for `x` and `y`.
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Ticket URL: <http://trac.sagemath.org/ticket/20850>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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