From: Caius Durling <redmine@...>
Date: 2010-12-21T08:43:25+09:00
Subject: [ruby-core:33792] [Ruby 1.8-Bug#4179][Open] OpenStruct#method_missing handles #[]= wrongly


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Bug #4179: OpenStruct#method_missing handles #[]=3D wrongly
http://redmine.ruby-lang.org/issues/show/4179

Author: Caius Durling
Status: Open, Priority: Normal
Category: lib, Target version: Ruby 1.8.7
ruby -v: ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0] =


## Code to reproduce:

    require "ostruct"
    OpenStruct.new[:foo] =3D true

## Expected

`NoMethodError` to be raised, as `OpenStruct#[]=3D` is not a defined meth=
od.

## Actual

`wrong number of arguments (2 for 1) (ArgumentError)`

## Notes

I wrote a test case to check that it would raise `NoMethodError` when you=
 call `OpenStruct#[]=3D`, and then amended `OpenStruct#method_missing` to=
 fix the bug. Patch attached with both test case (including a check that =
`OpenStruct#[]` raises a `NoMethodError` too) and the fix in it.


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