Item9538: Support.BestPracticeTip18 crashes trunk.foswiki.org

It's not even a very interesting topic, so I am wondering if there is something weird with RCS, time/date stamps, etc. on the server that might require shell access to debug this properly?

Possibly related: Item9482 which touched REVINFO recently, so marking this for Crawford & Michael's attention.

http://trunk.foswiki.org/Support.BestPracticeTip18 produces this backtrace:

Assertion (Attempt to reload 1 over version 2) failed!
 at /usr/home/trunk.foswiki.org/core/lib/Assert.pm line 80
   Assert::ASSERT(0, 'Attempt to reload 1 over version 2') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Meta.pm line 843
   Foswiki::Meta::loadVersion('Foswiki::Meta=HASH(0x1629c98)', 1) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Meta.pm line 298
   Foswiki::Meta::load('Foswiki::Meta=HASH(0x1629c98)', 1) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Render.pm line 1617
   Foswiki::Render::renderRevisionInfo('Foswiki::Render=HASH(0x25116a8)', 'Foswiki::Meta=HASH(0x1629c98)', 1, '$wikiusername') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Macros/REVINFO.pm line 30
   Foswiki::REVINFO('Foswiki=HASH(0xddd6d8)', 'Foswiki::Attrs=HASH(0x1629c88)', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 3016
   Foswiki::_expandMacroOnTopicRendering('Foswiki=HASH(0xddd6d8)', 'REVINFO', '"$wikiusername" topic="BestPracticeTip18" rev="1.1"', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 2906
   Foswiki::_processMacros('Foswiki=HASH(0xddd6d8)', '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...', 'CODE(0xd4c5e8)', 'Foswiki::Meta=HASH(0x14fee78)', 16) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 2703
   Foswiki::innerExpandMacros('Foswiki=HASH(0xddd6d8)', 'SCALAR(0xd4ce58)', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 3193
   Foswiki::expandMacros('Foswiki=HASH(0xddd6d8)', '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Meta.pm line 2956
   Foswiki::Meta::expandMacros('Foswiki::Meta=HASH(0x14fee78)', '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI/View.pm line 399
   Foswiki::UI::View::_prepare('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...', 'Foswiki::Meta=HASH(0x14fee78)', 0) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI/View.pm line 359
   Foswiki::UI::View::view('Foswiki=HASH(0xddd6d8)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI.pm line 310
   Foswiki::UI::__ANON__() called at /usr/local/lib/perl5/site_perl/5.8.8/Error.pm line 415
   eval {...} called at /usr/local/lib/perl5/site_perl/5.8.8/Error.pm line 407
   Error::subs::try('CODE(0xd8bc48)', 'HASH(0xddd3c8)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI.pm line 429
   Foswiki::UI::_execute('Foswiki::Request=HASH(0xdbf568)', 'CODE(0xdbf128)', 'view', 1) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI.pm line 277
   Foswiki::UI::handleRequest('Foswiki::Request=HASH(0xdbf568)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Engine/CGI.pm line 30
   Foswiki::Engine::CGI::run('Foswiki::Engine::CGI=HASH(0x901668)') called at /home/trunk.foswiki.org/core/bin/view line 24
 at /usr/home/trunk.foswiki.org/core/lib/Assert.pm line 80
   Assert::ASSERT(0, 'Attempt to reload 1 over version 2') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Meta.pm line 843
   Foswiki::Meta::loadVersion('Foswiki::Meta=HASH(0x1629c98)', 1) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Meta.pm line 298
   Foswiki::Meta::load('Foswiki::Meta=HASH(0x1629c98)', 1) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Render.pm line 1617
   Foswiki::Render::renderRevisionInfo('Foswiki::Render=HASH(0x25116a8)', 'Foswiki::Meta=HASH(0x1629c98)', 1, '$wikiusername') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Macros/REVINFO.pm line 30
   Foswiki::REVINFO('Foswiki=HASH(0xddd6d8)', 'Foswiki::Attrs=HASH(0x1629c88)', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 3016
   Foswiki::_expandMacroOnTopicRendering('Foswiki=HASH(0xddd6d8)', 'REVINFO', '"$wikiusername" topic="BestPracticeTip18" rev="1.1"', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 2906
   Foswiki::_processMacros('Foswiki=HASH(0xddd6d8)', '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...', 'CODE(0xd4c5e8)', 'Foswiki::Meta=HASH(0x14fee78)', 16) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 2703
   Foswiki::innerExpandMacros('Foswiki=HASH(0xddd6d8)', 'SCALAR(0xd4ce58)', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki.pm line 3193
   Foswiki::expandMacros('Foswiki=HASH(0xddd6d8)', '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...', 'Foswiki::Meta=HASH(0x14fee78)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Meta.pm line 2956
   Foswiki::Meta::expandMacros('Foswiki::Meta=HASH(0x14fee78)', '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI/View.pm line 399
   Foswiki::UI::View::_prepare('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN...', 'Foswiki::Meta=HASH(0x14fee78)', 0) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI/View.pm line 359
   Foswiki::UI::View::view('Foswiki=HASH(0xddd6d8)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI.pm line 310
   Foswiki::UI::__ANON__() called at /usr/local/lib/perl5/site_perl/5.8.8/Error.pm line 415
   eval {...} called at /usr/local/lib/perl5/site_perl/5.8.8/Error.pm line 407
   Error::subs::try('CODE(0xd8bc48)', 'HASH(0xddd3c8)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI.pm line 429
   Foswiki::UI::_execute('Foswiki::Request=HASH(0xdbf568)', 'CODE(0xdbf128)', 'view', 1) called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/UI.pm line 277
   Foswiki::UI::handleRequest('Foswiki::Request=HASH(0xdbf568)') called at /usr/home/trunk.foswiki.org/core/lib/Foswiki/Engine/CGI.pm line 30
   Foswiki::Engine::CGI::run('Foswiki::Engine::CGI=HASH(0x901668)') called at /home/trunk.foswiki.org/core/bin/view line 24.

-- PaulHarvey - 24 Aug 2010

All of the other Best Practice Tip topics that aren't at revision 1 are crashing the same way. And reviewing anything other than the first version also causes the crash.

-- DavidPatterson - 24 Aug 2010

When the revision of the current topicObject doesn't equal the rrev param to renderRevisionInfo(), it must create a new Meta and load the wanted rev into it.

-- MichaelDaum - 24 Aug 2010

Seems to be something in the view template. default view template doesn't trigger the fault.

The view template is Support.BestPracticeTipsViewTemplate.

It seems the problem is with

%STARTSECTION{"revtest"}%
%REVINFO{"$wikiusername" topic="%INCLUDINGTOPIC%" rev="1.1"}% - %REVINFO{"$date"  rev="1.1"}%
%ENDSECTION{"revtest"}%

You can try it on this topic

-- PaulHarvey - 25 Aug 2010

It's just some stupid code in REVINFO that needs a lobotomy.

-- CrawfordCurrie - 25 Aug 2010

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