Opened 3 years ago
Closed 2 years ago
#22733 closed defect (fixed)
Doctest: bug with first call to ex.series()
Reported by:  rws  Owned by:  

Priority:  major  Milestone:  sage8.0 
Component:  symbolics  Keywords:  
Cc:  Merged in:  
Authors:  Ralf Stephan  Reviewers:  Travis Scrimshaw 
Report Upstream:  N/A  Work issues:  
Branch:  92e6f44 (Commits)  Commit:  92e6f44e34dfa5e3a8bd68fb90bda06787362bdb 
Dependencies:  #23134  Stopgaps: 
Description
In a fresh Sage:
sage: var('a b c c0 c1 c2 c3 c4 c5 c6 d i j m n p r k u x y z') (a, b, c, c0, c1, c2, c3, c4, c5, c6, d, i, j, m, n, p, r, k, u, x, y, z) sage: a.series(x) 1*x + Order(x^20) sage: b.series(x) (b) sage: var('z0 z') (z0, z) sage: z0.series(x) 1*x + Order(x^20) sage: z.series(x) (z) sage: var('z0 z') (z0, z) sage: z.series(x) 1*x + Order(x^20) sage: z0.series(x) (z0)
It seems to always affect the first call to series.
Change History (8)
comment:1 Changed 3 years ago by
 Dependencies set to pynac0.7.8
 Report Upstream changed from N/A to Fixed upstream, in a later stable release.
comment:2 Changed 2 years ago by
comment:3 Changed 2 years ago by
 Dependencies changed from pynac0.7.8 to #23134
 Report Upstream changed from Fixed upstream, in a later stable release. to N/A
comment:4 Changed 2 years ago by
Just add a doctest, and I will set a positive review.
comment:5 Changed 2 years ago by
 Branch set to u/rws/bug_with_first_call_to_ex_series__
comment:6 Changed 2 years ago by
 Commit set to 92e6f44e34dfa5e3a8bd68fb90bda06787362bdb
 Status changed from new to needs_review
 Summary changed from Bug with first call to ex.series() to Doctest: bug with first call to ex.series()
Note: The failure is dependent on memory content and changes with every change of the comment part of the code. So, while this is fixed and the test always passes the test might not fail in versions that have the bug reintroduced.
New commits:
92e6f44  22733: Doctest: Bug with first call to ex.series()

comment:7 Changed 2 years ago by
 Reviewers set to Travis Scrimshaw
 Status changed from needs_review to positive_review
It's hard to have tests that are guaranteed to fail if a bug was (re)introduced, so we will just have to do the best we can.
comment:8 Changed 2 years ago by
 Branch changed from u/rws/bug_with_first_call_to_ex_series__ to 92e6f44e34dfa5e3a8bd68fb90bda06787362bdb
 Resolution set to fixed
 Status changed from positive_review to closed
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See also #23072