Bug 901526

Summary: build on non-x86 fails with "error: 'scanned' may be used uninitialized"
Product: [Fedora] Fedora Reporter: Dan Horák <dan>
Component: qpid-protonAssignee: Darryl L. Pierce <dpierce>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 18CC: dpierce, tross
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OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2013-02-08 02:06:09 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 467765    
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proposed fix none

Description Dan Horák 2013-01-18 11:47:41 UTC 
Build of qpid-proton-0.3 fails on s390(x) and ppc(64) with an error from gcc

...
./usr/bin/cc  -Dqpid_proton_EXPORTS -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4  -m31 -march=z9-109 -mtune=z10  -fPIC -I/builddir/build/BUILD/qpid-proton-c-0.3 -I/builddir/build/BUILD/qpid-proton-c-0.3/include    -Werror -Wall -pedantic-errors -std=c99 -o CMakeFiles/qpid-proton.dir/src/messenger.c.o   -c /builddir/build/BUILD/qpid-proton-c-0.3/src/messenger.c
............/builddir/build/BUILD/qpid-proton-c-0.3/src/codec/codec.c: In function 'pn_data_vscan':
/builddir/build/BUILD/qpid-proton-c-0.3/src/codec/codec.c:1712:16: error: 'scanned' may be used uninitialized in this function [-Werror=maybe-uninitialized]
cc1: all warnings being treated as errors
make[2]: *** [CMakeFiles/qpid-proton.dir/src/codec/codec.c.o] Error 1
...

Probably the understanding of the function by gcc differs between x86 and s390 or ppc
gcc-4.7.2-8.fc18.s390
gcc-4.7.2-7.fc18.ppc

Version-Release number of selected component (if applicable):
qpid-proton-0.3-1.fc18
Comment 1 Dan Horák 2013-01-23 13:54:04 UTC 
Created attachment 685907 [details]
proposed fix
Comment 2 Fedora Update System 2013-01-25 15:34:01 UTC 
qpid-proton-0.3-2.fc17 has been submitted as an update for Fedora 17.
https://admin.fedoraproject.org/updates/qpid-proton-0.3-2.fc17
Comment 3 Fedora Update System 2013-01-25 16:01:57 UTC 
qpid-proton-0.3-2.fc18 has been submitted as an update for Fedora 18.
https://admin.fedoraproject.org/updates/qpid-proton-0.3-2.fc18
Comment 4 Dan Horák 2013-01-26 10:11:36 UTC 
It's still failing, my proposed patch was setting the "scanned" variable, your committed patch is setting the "found" variable. See log at http://s390.koji.fedoraproject.org/koji/taskinfo?taskID=921511
Comment 5 Fedora Update System 2013-01-26 15:58:12 UTC 
Package qpid-proton-0.3-2.fc18:
* should fix your issue,
* was pushed to the Fedora 18 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing qpid-proton-0.3-2.fc18'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2013-1529/qpid-proton-0.3-2.fc18
then log in and leave karma (feedback).
Comment 6 Fedora Update System 2013-01-28 12:36:32 UTC 
qpid-proton-0.3-3.fc18 has been submitted as an update for Fedora 18.
https://admin.fedoraproject.org/updates/qpid-proton-0.3-3.fc18
Comment 7 Fedora Update System 2013-01-28 12:53:07 UTC 
qpid-proton-0.3-3.fc17 has been submitted as an update for Fedora 17.
https://admin.fedoraproject.org/updates/qpid-proton-0.3-3.fc17
Comment 8 Fedora Update System 2013-02-08 02:06:13 UTC 
qpid-proton-0.3-3.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2013-02-08 02:13:32 UTC 
qpid-proton-0.3-3.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.