From: Mauricio Fernandez <mfp@...>
Date: 2007-04-26T19:28:59+09:00
Subject: Re: [patch] Re: test/unit inconsistencies between 1.9 and 1.8

On Thu, Apr 26, 2007 at 06:56:45PM +0900, Adam Bozanich wrote:
> On 4/26/07, Mauricio Fernandez <mfp@acm.org> wrote:
> >RUBY_VERSION                                       # => "1.9.0"
> >RUBY_RELEASE_DATE                                  # => "2007-02-07"
> >proc{}.arity                                       # => 0
> >proc{||}.arity                                     # => 0
> >Proc.new{}.arity                                   # => 0
> 
> Strange, must be a regression.
> 
> irb(main):001:0> RUBY_VERSION
> => "1.9.0"
> irb(main):002:0> RUBY_RELEASE_DATE
> => "2007-04-26"
> irb(main):003:0> proc{}.arity
> => -1
> irb(main):004:0> proc{||}.arity
> => -1
> irb(main):005:0> Proc.new{}.arity
> => -1

Yes, I've traced it back to this:

Wed Mar 21 20:05:07 2007  Koichi Sasada  <ko1@atdot.net>

	* compile.c, parse.y, eval.c, intern.h, iseq.c, lex.c, node.h,
	  proc.c, vm.c, vm_macro.def, vm_macro.def, yarvcore.c, yarvcore.h,
	  debug.c, debug.h: merge half-baked-1.9 changes.  The biggest change
	  is to change node structure around NODE_SCOPE, NODE_ARGS.  Every
	  scope (method/class/block) has own NODE_SCOPE node and NODE_ARGS
	  represents more details of arguments information.  I'll write a
	  document about detail of node structure.

I've sent a bug report to ruby-core.

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby
                        ** Latest postings **
On GC and finalizers in Ruby, corrected weak hash table implementations
  http://eigenclass.org/hiki/deferred-finalizers-in-Ruby
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  http://eigenclass.org/hiki/simplefold