#11986: inconsistent integer hashing on 64bit systems with python 2.7
-----------------------+----------------------------------------------------
Reporter: fbissey | Owner: jdemeyer
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.8
Component: c_lib | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Jeroen Demeyer
Merged: | Dependencies: #9958
-----------------------+----------------------------------------------------
Comment(by fbissey):
I tried this on one of my amd64 machine with a vanilla sage-4.8.alpha3
(using python-2.6) and got this back:
{{{
sage -t -long -force_lib "devel/sage-main/sage/rings/integer.pyx"
**********************************************************************
File "/home/work/fbissey/sandbox/sage-4.8.alpha3/devel/sage-
main/sage/rings/integer.pyx", line 3075:
sage: hash(n) == hash(long(n))
Expected:
True
Got:
False
**********************************************************************
File "/home/work/fbissey/sandbox/sage-4.8.alpha3/devel/sage-
main/sage/rings/integer.pyx", line 3077:
sage: hash(n-1) == hash(long(n-1))
Expected:
True
Got:
False
**********************************************************************
File "/home/work/fbissey/sandbox/sage-4.8.alpha3/devel/sage-
main/sage/rings/integer.pyx", line 3079:
sage: hash(-n) == hash(long(-n))
Expected:
True
Got:
False
**********************************************************************
File "/home/work/fbissey/sandbox/sage-4.8.alpha3/devel/sage-
main/sage/rings/integer.pyx", line 3081:
sage: hash(1-n) == hash(long(1-n))
Expected:
True
Got:
False
**********************************************************************
1 items had failures:
4 of 25 in __main__.example_63
***Test Failed*** 4 failures.
}}}
Everything is working as intended with python-2.7 on that machine.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11986#comment:6>
Sage <http://www.sagemath.org>
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