From: "akira yamada / やまだあきら" <akira@...>
Date: 2006-04-18T21:03:36+09:00
Subject: [ruby-dev:28583] Re: OP_ASGN1 and OP_ASGN2 allow calling of private operators and problem with splat

以下は[ruby-core:07366]にある再現コードです。

Dominik Bathon wrote:
> OP_ASGN1:
> 
> irb(main):001:0> class A; def method_missing(*a); p a; 1; end; end
> => nil
> irb(main):002:0> a=A.new
> => #<A:0xb7ed97dc>
> irb(main):003:0> a[0,*[1,2,3]]
> [:[], 0, 1, 2, 3]
> => 1
> irb(main):004:0> a[0,*[1,2,3]]=3
> [:[]=, 0, 1, 2, 3, 3]
> => 3
> irb(main):005:0> a[0,*[1,2,3]]+=3
> [:[], [0, 1, 2, 3]]
> [:[]=, [0, 1, 2, 3], 4]
> => 4

trunkとruby_1_8の最新で
この中の最後の a[0,*[1,2,3]]+=3 がSEGVします。

-- 
やまだあきら  <akira@arika.org>