Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 1570256 - python35: test_buffer check fails on ppc64le
Summary: python35: test_buffer check fails on ppc64le
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: python35
Version: 28
Hardware: Unspecified
OS: Unspecified
low
unspecified
Target Milestone: ---
Assignee: Miro Hrončok
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On: 1540995
Blocks: PPCTracker
TreeView+ depends on / blocked
 
Reported: 2018-04-21 08:32 UTC by Miro Hrončok
Modified: 2019-03-14 11:21 UTC (History)
11 users (show)

Fixed In Version: python35-3.5.7~rc1-1.fc31
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1540995
Environment:
Last Closed: 2019-03-14 11:21:48 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description Miro Hrončok 2018-04-21 08:32:39 UTC 
+++ This bug was initially created as a clone of Bug #1540995 +++

======================================================================
FAIL: test_memoryview_struct_module (test.test_buffer.TestBufferProtocol)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/build/BUILD/Python-3.5.5/Lib/test/test_buffer.py", line 2540, in test_memoryview_struct_module
    self.assertEqual(m[1], nd[1])
AssertionError: -21.099998474121094 != -21.100000381469727
----------------------------------------------------------------------
Ran 72 tests in 16.169s
FAILED (failures=1)

Version-Release number of selected component (if applicable):
python3-3.5.5-1.fc28


How reproducible:
100%


Steps to Reproduce:
1. Build python35 with test_buffer enabled in rawhide

Additional info:
The test was disabled in 3.5.5-1 so that the F28 rebuild can happen.


--- Additional comment from Iryna Shcherbina on 2018-02-27 20:22:54 CET ---

The culprit might be in the gcc update.

The test works with gcc-7.2.1-2.fc27.ppc64le, but if you update to gcc-8.0.1-0.14.fc28.ppc64le it starts to fail.
Comment 1 Petr Viktorin 2019-01-07 13:48:19 UTC 
Setting this to low priority.

It would be great if someone else would get to this earlier than we can. If that's your case, please assign the bug to yourself (and adjust priority accordingly).
Comment 2 Victor Stinner 2019-03-05 13:29:54 UTC 
This issue is duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=1540995 but for Python 3.5: this bug is caused by a compiler bug which has been fixed in Rawhide:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88892
Note You need to log in before you can comment on or make changes to this bug.