[MacRuby-devel] MacRuby 0.10 Sqlite3 and Sequel

Morgan Schweers cyberfox at gmail.com
Sat Apr 9 16:55:45 PDT 2011


Greetings,
It is a pretty reduced test case, in fact.

I dug into it briefly, but it quickly went over my head...  It's clear
there's a difference in how the stack is unwound when a block return happens
eight-ish levels down, between the two.  It looks like in MRI code that is
later in methods that are being unwound is _NOT_ executed, but in MacRuby,
that code _IS_ being executed.  I can't seem to make an example, although
that's what I'm seeing when I run the gist provided with a ton of debugging
in place.

What I'm seeing is that in
${SEQUEL_GEM}/lib/sequel/dataset/action.rb#single_record both the 'return'
in the block, and the nil at the end are being executed, when only one
should be.  (In MRI 1.9.2, only the return in the block is executed, not the
nil at the end.)  That's pretty much where I lost the plot; I don't know why
it's behaving differently right there.

A tiny tweak to #single_record made it work, but it does look like it's a
MacRuby issue.

--  Morgan

On Sat, Apr 9, 2011 at 7:58 AM, Eloy Duran <eloy.de.enige at gmail.com> wrote:

> If it works on MRI but not on MacRuby it's a bug. Unless someone
> with MacRuby +Sequel experience can give you a workaround, the only course
> of action would be to create a simple self contained reduction, by hunting
> down the code in Sequel that's broken on MacRuby and create a ticket with
> the reduction.
>
> HTH
>
> On 9 apr 2011, at 02:55, Daniel Westendorf wrote:
>
> Hi all,
>
> I'm not able to query a Sqlite database using MacRuby and Sequel. Consider
> the following gist: https://gist.github.com/910989
>
> macruby => 0.10
> sequel => 3.22.0
> sqlite3 => 1.3.3
>
> I get a response from the the db when I select ALL the rows, but not when I
> query for one record. It works with MRI 1.9.2. Am I doing something wrong,
> or is this a bug? Does anyone have some suggestions on what I should do to
> troubleshoot this or work around it?
>
> Thanks,
>
> Daniel
>
>
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