Le mercredi 7 octobre 2020 à 16:40:16 UTC+2, Eric Gourgoulhon a écrit :

> On Ubuntu 20.04 running on Intel Core i7-8665U + 32 GB RAM:
>
> - incremental build (-j8) from 9.2.beta14 with system Python (=3.8.2): OK
> - all tests from ptestlong passed, except for 
>
> sage -t --long --warn-long 74.5 --random-seed=0 
> src/sage/quadratic_forms/quadratic_form__equivalence_testing.py
> **********************************************************************
> File "src/sage/quadratic_forms/quadratic_form__equivalence_testing.py", 
> line 90, in 
> sage.quadratic_forms.quadratic_form__equivalence_testing.is_globally_equivalent_to
> Failed example:
>     Q.is_globally_equivalent_to(P)
> Expected:
>     False
> Got:
>     True
> **********************************************************************
> 1 item had failures:
>    1 of  21 in 
> sage.quadratic_forms.quadratic_form__equivalence_testing.is_globally_equivalent_to
>     [69 tests, 1 failure, 0.27 s]
>
> This error is persistent (i.e. still occurs when the test is run 
> standalone) and was not there in 9.2.beta14.
> It has also been reported for this release with Ubuntu 20.04 in 
> https://groups.google.com/g/sage-release/c/0MnZQYItCYc/m/6ks32lnXAAAJ
>
>
This doctest failure is due to a bug in the system Pari (2.11.2 in Ubuntu 
20.04); it has been fixed in Pari 2.11.4,  which is now shipped with Sage, 
cf. https://trac.sagemath.org/ticket/27749. 

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