Bug 492185

Summary: qt-4.5.0 induces internal compiler error: in output_460, at config/rs6000/rs6000.md:11495
Product: [Fedora] Fedora Reporter: Rex Dieter <rdieter>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 10CC: jakub, jreznik, kevin, than
Target Milestone: ---   
Target Release: ---   
Hardware: powerpc   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2009-12-18 09:06:49 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Rex Dieter 2009-03-25 19:24:28 UTC
qt-4.5.0 F-10 builds are falling over on ppc,

g++ -c ... io/qabstractfileengine.cpp
tools/qstring.cpp: In function 'int qFindString(const QChar*, int, int, const QChar*, int, Qt::CaseSensitivity)':
tools/qstring.cpp:2330: internal compiler error: in output_460, at config/rs6000/rs6000.md:11495

http://koji.fedoraproject.org/koji/taskinfo?taskID=1258538

Comment 1 Rex Dieter 2009-03-27 13:38:58 UTC
possibly related to bug #485232 , where we saw similar issue for rawhide/f11 and gcc-4.4.

Comment 2 Jakub Jelinek 2009-03-27 14:53:41 UTC
Yes, it is the same thing (and bje has even backported my 4.4 fix to 4.3 branch a few days ago).  Whenever new F10 gcc is built, it will be fixed there, but there are still no firm plans for that.

As a workaround, just kill the useless fn prototypes after functions have been defined.

Comment 3 Kevin Kofler 2009-03-27 15:21:34 UTC
Why isn't GCC updated more often with fixes like that? IMHO having 1 or 2 gcc bugfix updates a month would be great.

Comment 4 Rex Dieter 2009-03-27 15:48:54 UTC
working around this appears to be more difficult than expected.  Even an updated gcc for buildsys-only (intially) would be appreciated.

Comment 5 Rex Dieter 2009-03-27 15:53:40 UTC
There's a bit of an urgency here, we *had* planned on including qt-4.5 along with kde-4.2.2 update coming within the coming week.

Comment 6 Kevin Kofler 2009-03-27 16:41:07 UTC
And we'd like this fixed in F9 too, as our plan was to push Qt 4.5 there too.

Comment 7 Rex Dieter 2009-03-27 16:46:59 UTC
fyi, qt-4.5.0 built fine on F-9:
http://koji.fedoraproject.org/koji/buildinfo?buildID=95389

Comment 8 Kevin Kofler 2009-03-27 16:53:29 UTC
Now that's interesting, as F9 also has GCC 4.3.

Comment 9 Jakub Jelinek 2009-03-27 17:02:26 UTC
The major problem with gcc-4.3.* updates is that if I were to create an errata, it should have bugs fixed, but there are plenty of bugs I've so far on the trunk (4.4+) only and not backported yet.  Just see the 4.3 Serious regressions query on http://gcc.gnu.org/, looking for bugs assigned to me and which are not 4.4 regressions, there are ATM 27 of them, most of them need to be backported and bootstrapped/regtested.  I've been busy with GCC 4.4 work during last 9 months, so for backporting isn't enough time left.

Comment 10 Rex Dieter 2009-03-27 19:55:02 UTC
ok, crisis averted, by patching out useless prototypes as suggested, thanks.

http://koji.fedoraproject.org/koji/taskinfo?taskID=1261323

Comment 11 Bug Zapper 2009-11-18 11:36:20 UTC
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Comment 12 Bug Zapper 2009-12-18 09:06:49 UTC
Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.