Bug 907430

Summary:	gcc-4.8 produces code that makes mariadb regression tests fail on PPC64
Product:	[Fedora] Fedora	Reporter:	Honza Horak <hhorak>
Component:	gcc	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED UPSTREAM	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	jakub, law
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Fixed In Version:		Doc Type:	Bug Fix
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Last Closed:	2013-02-04 16:11:43 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:
Bug Depends On:
Bug Blocks:	906367

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.