Bug 824463

Summary: gcc-4.7 regression bitfield store replaced with full-byte store
Product: [Fedora] Fedora Reporter: Brent Baude <bbaude>
Component: gccAssignee: Xavier Lamien <lxtnow>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 17CC: brendan.jones.it, dwa, gustavold, jakub, law
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Target Release: ---   
Hardware: ppc64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2012-07-12 15:46:16 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 813095, 855919    

Description Brent Baude 2012-05-23 14:11:32 UTC
Description of problem:
There is a regression in 4.7 and 4.8 for bitfield stores. This was discovered in an error in xulrunner, which is blocking firefox for our F17 release (hence the critical nature of this bug).

The upstream bug is at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53438 and I have tested the patch provided there against F17 and it fixed the problem.

There is speculation this might also fix some other packages but we have yet to identify which packages those might be.

Comment 1 Brendan Jones 2012-06-04 08:50:08 UTC
Is it possible that this is causing bug 827748 ?

Comment 2 Brent Baude 2012-06-04 12:57:53 UTC
gcc has been updated so it's worth trying.