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bug#23205: 25.0.92; sort-tests is flaky


From: Paul Eggert
Subject: bug#23205: 25.0.92; sort-tests is flaky
Date: Wed, 6 Apr 2016 01:31:07 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

Either the sorting should
be made stable, or the test shouldn't assume stable sorting.

GNU Emacs's sorting is stable, but some sorting code in the test case is wrong, and the random tests that trigger the test-case bug occur only with a small probability. I installed the attached to fix the test-case bug. Thanks for reporting the details; it would have taken a while for me to track it down without that useful clue involving Zi and zI.

Attachment: 0001-Fix-stability-confusion-in-sort-tests.txt
Description: Text document


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