Re: [Catalyst] Use of uninitialized value in delete

2013-01-28 Thread Bill Moseley 
On Mon, Oct 29, 2012 at 3:45 AM, Will Crawford
billcrawford1...@gmail.comwrote:

 On 19 October 2012 18:37, Bill Moseley mose...@hank.org wrote:
  delete $c-stash-{foo};

 Is there a function / method called foo anywhere in scope?


I've ignored this for a while, but still seeing in the app's logs.

No, there's no function foo defined.

Another thing that is odd is I have a $SIG{__WARN__} handler and all other
warning are caught by that but not the Use of uninitialized value in
delete.

This machine is running 5.10.1 -- maybe it's related to that version of
Perl.

-- 
Bill Moseley
mose...@hank.org
___
List: Catalyst@lists.scsys.co.uk
Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
Dev site: http://dev.catalyst.perl.org/

Re: [Catalyst] Use of uninitialized value in delete

2012-10-29 Thread Will Crawford 
On 19 October 2012 18:37, Bill Moseley mose...@hank.org wrote:
 delete $c-stash-{foo};

Is there a function / method called foo anywhere in scope?

___
List: Catalyst@lists.scsys.co.uk
Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
Dev site: http://dev.catalyst.perl.org/

Re: [Catalyst] Use of uninitialized value in delete

2012-10-28 Thread Bill Moseley 
On Sat, Oct 27, 2012 at 9:34 PM, Larry Leszczynski lar...@emailplus.orgwrote:

 Hi Bill -

 On Fri, Oct 19, 2012, at 11:37 AM, Bill Moseley wrote:

  Use of uninitialized value in delete
 
  with a line number pointing to this line:
 
  delete $c-stash-{foo};
 
  I didn't think that delete() issued a warning,

 Are both $c and $c-stash defined at that point?


Those would be different errors in Perl:

$ perl -wle 'my $c; $c-foo'
Can't call method foo on an undefined value at -e line 1.


$ perl -wle 'sub Foo::stash { return {} }; $s = bless {}, Foo;  delete
$s-stash-{bar}'


$ perl -wle 'sub Foo::stash { undef }; $s = bless {}, Foo;  delete
$s-stash-{bar}'
Can't use an undefined value as a HASH reference at -e line 1.


-- 
Bill Moseley
mose...@hank.org
___
List: Catalyst@lists.scsys.co.uk
Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
Dev site: http://dev.catalyst.perl.org/

Re: [Catalyst] Use of uninitialized value in delete

2012-10-28 Thread Lars Balker 
On Fri, Oct 19, 2012 at 7:37 PM, Bill Moseley mose...@hank.org wrote:
 In server logs I'm seeing this warnings:

 Use of uninitialized value in delete


 with a line number pointing to this line:

 delete $c-stash-{foo};

Is that the literal error-message and code?

% perl -e 'use strict; use warnings; my %foo; my $bar; delete $foo{$bar}'
Use of uninitialized value $bar in delete at -e line 1.
% perl -e 'use strict; use warnings; my %foo; delete $foo{undef()}'
Use of uninitialized value in delete at -e line 1.
% perl -e 'use strict; use warnings; my %foo; sub foo { undef } delete
$foo{foo()}'
Use of uninitialized value in delete at -e line 1.

(perl 5.16.0)

As for stash, it's just a Moose-attribute returning a hashref.
-- 
Lars Balker  Consult::Perl

___
List: Catalyst@lists.scsys.co.uk
Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
Dev site: http://dev.catalyst.perl.org/

Re: [Catalyst] Use of uninitialized value in delete

2012-10-27 Thread Larry Leszczynski 
Hi Bill -

On Fri, Oct 19, 2012, at 11:37 AM, Bill Moseley wrote:

 Use of uninitialized value in delete
 
 with a line number pointing to this line:
 
 delete $c-stash-{foo};
 
 I didn't think that delete() issued a warning,

Are both $c and $c-stash defined at that point?


Larry

___
List: Catalyst@lists.scsys.co.uk
Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
Dev site: http://dev.catalyst.perl.org/

[Catalyst] Use of uninitialized value in delete

2012-10-19 Thread Bill Moseley 
Sorry for the duplicate if you are on the SF Perl list.


In server logs I'm seeing this warnings:

Use of uninitialized value in delete


with a line number pointing to this line:

delete $c-stash-{foo};


I didn't think that delete() issued a warning, and I can't seem to make it
happen:
 $ perl -Mwarnings -Mstrict -Wle 'use warnings; use strict; my $x = {};
delete $x-{a}'

Is there something special about $c-stash that might trigger this in Perl?
Anyone else spot these in the logs.


This is on Perl 5.14.2 / Catalyst 5.90016 / mod_perl 2.0.7

-- 
Bill Moseley
mose...@hank.org
___
List: Catalyst@lists.scsys.co.uk
Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
Dev site: http://dev.catalyst.perl.org/