Bug 492185 - qt-4.5.0 induces internal compiler error: in output_460, at config/rs6000/rs6000.md:11495
qt-4.5.0 induces internal compiler error: in output_460, at config/rs6000/rs6...
Product: Fedora
Classification: Fedora
Component: gcc (Show other bugs)
powerpc Linux
low Severity medium
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Assigned To: Jakub Jelinek
Fedora Extras Quality Assurance
Depends On:
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Reported: 2009-03-25 15:24 EDT by Rex Dieter
Modified: 2009-12-18 04:06 EST (History)
4 users (show)

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Doc Type: Bug Fix
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Last Closed: 2009-12-18 04:06:49 EST
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Description Rex Dieter 2009-03-25 15:24:28 EDT
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

Comment 1 Rex Dieter 2009-03-27 09:38:58 EDT
possibly related to bug #485232 , where we saw similar issue for rawhide/f11 and gcc-4.4.
Comment 2 Jakub Jelinek 2009-03-27 10:53:41 EDT
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 11:21:34 EDT
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 11:48:54 EDT
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 11:53:40 EDT
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 12:41:07 EDT
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 12:46:59 EDT
fyi, qt-4.5.0 built fine on F-9:
Comment 8 Kevin Kofler 2009-03-27 12:53:29 EDT
Now that's interesting, as F9 also has GCC 4.3.
Comment 9 Jakub Jelinek 2009-03-27 13:02:26 EDT
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 15:55:02 EDT
ok, crisis averted, by patching out useless prototypes as suggested, thanks.

Comment 11 Bug Zapper 2009-11-18 06:36:20 EST
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Comment 12 Bug Zapper 2009-12-18 04:06:49 EST
Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is 
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