#17427: x==y while hash(x)!=hash(y) with SchemeMorphism_point_projective_field
-------------------------------------+-------------------------------------
Reporter: ncohen | Owner: bhutz
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.5
Component: algebraic | Resolution:
geometry | Merged in:
Keywords: | Reviewers: Joao Alberto de Faria
Authors: Ben Hutz | Work issues:
Report Upstream: N/A | Commit:
Branch: | 4d6c87e5d2ba91cb16156f0dfb266180e0af9e2f
u/bhutz/ticket/17427 | Stopgaps:
Dependencies: #17433 |
-------------------------------------+-------------------------------------
Changes (by vbraun):
* status: positive_review => needs_work
Comment:
On 32-bit:
{{{
sage -t --long src/sage/schemes/projective/projective_point.py
**********************************************************************
File "src/sage/schemes/projective/projective_point.py", line 374, in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_ring.__hash__
Failed example:
hash(P([1,1]))
Expected nothing
Got:
1265304440
**********************************************************************
File "src/sage/schemes/projective/projective_point.py", line 376, in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_ring.__hash__
Failed example:
hash(P.point([2,2], False))
Expected nothing
Got:
1265304440
**********************************************************************
File "src/sage/schemes/projective/projective_point.py", line 385, in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_ring.__hash__
Failed example:
hash(P([1+w, 2]))
Expected nothing
Got:
-609701421
**********************************************************************
File "src/sage/schemes/projective/projective_point.py", line 387, in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_ring.__hash__
Failed example:
hash(P([2, 1-w]))
Expected nothing
Got:
-609701421
**********************************************************************
File "src/sage/schemes/projective/projective_point.py", line 393, in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_ring.__hash__
Failed example:
hash(P([2,5]))
Expected nothing
Got:
-479010389
**********************************************************************
File "src/sage/schemes/projective/projective_point.py", line 1140, in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_field.__hash__
Failed example:
hash(P([1/2, 1]))
Expected nothing
Got:
-1741117121
**********************************************************************
File "src/sage/schemes/projective/projective_point.py", line 1142, in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_field.__hash__
Failed example:
hash(P.point([1, 2], False))
Expected nothing
Got:
-1741117121
**********************************************************************
2 items had failures:
2 of 4 in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_field.__hash__
5 of 12 in
sage.schemes.projective.projective_point.SchemeMorphism_point_projective_ring.__hash__
[302 tests, 7 failures, 0.60 s]
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/17427#comment:17>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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