Bug 907430 - gcc-4.8 produces code that makes mariadb regression tests fail on PPC64
Summary: gcc-4.8 produces code that makes mariadb regression tests fail on PPC64
Keywords:
Status: CLOSED UPSTREAM
Alias: None
Product: Fedora
Classification: Fedora
Component: gcc
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: 906367
TreeView+ depends on / blocked
 
Reported: 2013-02-04 11:31 UTC by Honza Horak
Modified: 2013-02-04 16:11 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2013-02-04 16:11:43 UTC
Type: Bug
Embargoed:

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System ID Private Priority Status Summary Last Updated
GNU Compiler Collection 56205 0 None None None Never

Description Honza Horak 2013-02-04 11:31:22 UTC 
Description of problem:
This issue was actually reported as bug #906367. MariaDB's regression tests fail on PPC64 and succeeded on Intel arches. The same code does work on F18 (with gcc-4.7) and on the other hand code generated using gcc-4.8 doesn't work even on F18. From that observation it seems the code is generated wrong with gcc-4.8.

However, I haven't manage to created a minimal reproducer.

For some more info see bug #906367 or http://ppc.koji.fedoraproject.org/koji/taskinfo?taskID=886935

Version-Release number of selected component (if applicable):
gcc-4.8.0-0.6.fc19.ppc64

How reproducible:
every-time

Steps to Reproduce:
1. build mariadb or mysql package on PPC64
  
Actual results:
regression tests fail

Expected results:
regression tests pass


Additional info:
The failing tests are related to atomicity and precision testing.
Comment 1 Jakub Jelinek 2013-02-04 16:11:43 UTC 
Tracking upstream.
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