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<h1>#57448: Asking .WHAT on an enum element in rakudo causes null PMC access</h1>
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masak
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<a name="txn-452108" href="/rt3/Ticket/Display.html?id=57448#txn-452108">#</a>
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<td class="date">Wed Jul 30 22:50:31 2008</td>
<td class="description">
masak - Ticket created
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<td align="right" class="message-header-key">Subject:</td>
<td class="message-header-value">Asking .WHAT on an enum element in rakudo causes null PMC access</td>
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<tr>
<td align="right" class="message-header-key">Date:</td>
<td class="message-header-value">Thu, 31 Jul 2008 07:50:11 +0200</td>
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<td align="right" class="message-header-key">To:</td>
<td class="message-header-value">rakudobug <!-- x --> at perl.org</td>
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<td align="right" class="message-header-key">From:</td>
<td class="message-header-value">"Carl Mäsak" <cmasak <!-- x --> at gmail.com></td>
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$ svn info | grep vi<br />
<br />
$ ./perl6 -e 'enum Weekday<Monday Tuesday>; say Tuesday.WHAT'<br />
Null PMC access in find_method()<br />
[...]<br />
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<a name="txn-452358" href="/rt3/Ticket/Display.html?id=57448#txn-452358">#</a>
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<td class="date">Thu Jul 31 07:43:00 2008</td>
<td class="description">
masak - Correspondence added
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<td align="right" class="message-header-key">Subject:</td>
<td class="message-header-value">Re: [perl #57448] Asking .WHAT on an enum element in rakudo causes null PMC access</td>
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<td align="right" class="message-header-key">Date:</td>
<td class="message-header-value">Thu, 31 Jul 2008 16:42:40 +0200</td>
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<td align="right" class="message-header-key">To:</td>
<td class="message-header-value">perl6-bugs-followup <!-- x --> at perl.org</td>
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<td align="right" class="message-header-key">From:</td>
<td class="message-header-value">"Carl Mäsak" <cmasak <!-- x --> at gmail.com></td>
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<div class="message-stanza-depth-0">
Carl (>):<br />
<div class="message-stanza-depth-1">
> $ svn info | grep vi<br />
</div>
<br />
29905<br />
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<a name="txn-452374" href="/rt3/Ticket/Display.html?id=57448#txn-452374">#</a>
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<td class="date">Thu Jul 31 08:13:32 2008</td>
<td class="description">
moritz - Correspondence added
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<div class="message-stanza-depth-0">
I Added tests to t/spec/S12-enums/thorough.t (which is not yet in<br />
spectest_regression). (And due to the brokenness of rakudo as described<br />
in RT #57452 I can't fudge and add it.)<br />
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<a name="txn-452378" href="/rt3/Ticket/Display.html?id=57448#txn-452378">#</a>
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<td class="date">Thu Jul 31 08:13:36 2008</td>
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RT_System - Status changed from 'new' to 'open'
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<a name="txn-453702" href="/rt3/Ticket/Display.html?id=57448#txn-453702">#</a>
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<td class="date">Sat Aug 02 13:24:51 2008</td>
<td class="description">
pmichaud - Correspondence added
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<td align="right" class="message-header-key">Subject:</td>
<td class="message-header-value">Re: [perl #57448] Asking .WHAT on an enum element in rakudo causes null PMC access</td>
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<td align="right" class="message-header-key">Date:</td>
<td class="message-header-value">Sat, 2 Aug 2008 15:24:26 -0500</td>
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<td align="right" class="message-header-key">To:</td>
<td class="message-header-value">perl6-compiler <!-- x --> at perl.org</td>
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<td align="right" class="message-header-key">From:</td>
<td class="message-header-value">"Patrick R. Michaud" <pmichaud <!-- x --> at pobox.com></td>
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On Wed, Jul 30, 2008 at 10:50:32PM -0700, Carl Mäsak wrote:<br />
<div class="message-stanza-depth-1">
> $ svn info | grep vi<br />
> <br />
> $ ./perl6 -e 'enum Weekday<Monday Tuesday>; say Tuesday.WHAT'<br />
> Null PMC access in find_method()<br />
> [...]<br />
</div>
<br />
This is likely related to RT #57450, in that it's not clear<br />
how enums should report their type or .perl representation.<br />
<br />
Since S12 (currently) says that things like C<Weekday> are really <br />
role names and the enum values are subset types, I would somewhat <br />
expect C<Tuesday.WHAT> to return the C<Int> protoobject. But<br />
as with #57450, we probably need confirmation or clarification<br />
of this from p6l.<br />
<br />
Thanks!<br />
<br />
Pm<br />
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<a name="txn-527856" href="/rt3/Ticket/Display.html?id=57448#txn-527856">#</a>
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<td class="date">Sun Feb 01 20:18:43 2009</td>
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s1n - Correspondence added
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On Sat Aug 02 13:24:51 2008, pmichaud wrote:<br />
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> On Wed, Jul 30, 2008 at 10:50:32PM -0700, Carl Mäsak wrote:<br />
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> > $ svn info | grep vi<br />
> > <br />
> > $ ./perl6 -e 'enum Weekday<Monday Tuesday>; say Tuesday.WHAT'<br />
> > Null PMC access in find_method()<br />
> > [...]<br />
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> <br />
> This is likely related to RT #57450, in that it's not clear<br />
> how enums should report their type or .perl representation.<br />
> <br />
> Since S12 (currently) says that things like C<Weekday> are really <br />
> role names and the enum values are subset types, I would somewhat <br />
> expect C<Tuesday.WHAT> to return the C<Int> protoobject. But<br />
> as with #57450, we probably need confirmation or clarification<br />
> of this from p6l.<br />
> <br />
> Thanks!<br />
> <br />
> Pm<br />
> <br />
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<br />
This is partially fixed with index 91d4c6c..d87271 . C<Tuesday.WHAT><br />
does not segfault, but C<Weekday.WHAT> still segfaults.<br />
<br />
-Jason "s1n" Switzer<br />
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<a name="txn-557716" href="/rt3/Ticket/Display.html?id=57448#txn-557716">#</a>
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<td class="date">Mon Apr 27 00:27:15 2009</td>
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masak - Comments added
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Resolving this ticket, as neither C<Tuesday.WHAT> nor C<Weekday.WHAT><br />
causes a Null PMC access any more, and tests have been added.<br />
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<a name="txn-557718" href="/rt3/Ticket/Display.html?id=57448#txn-557718">#</a>
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<td class="date">Mon Apr 27 00:27:17 2009</td>
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masak - Status changed from 'open' to 'resolved'
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