Bug #4179: OpenStruct#method_missing handles #[]= wrongly

• Status: Closed
• Priority: Normal
• Assignee: -
• Target version: 1.9.3
• ruby -v: ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]

[caius (Caius Durling)]

=begin
## Code to reproduce:

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

## Expected

NoMethodError to be raised, as OpenStruct#[]= is not a defined method.

## 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#[]=, 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.
=end

[caius (Caius Durling)]

=begin
On 20 Dec 2010, at 23:43, Caius Durling wrote:

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

Erm, not quite sure why reloading the redmine page triggered another notification about the ticket to be sent to the list. Apologies about that.

C

---

Caius Durling
[e-mail]
[phone]
http://caius.name/

On 20 Dec 2010, at 23:43, Caius Durling wrote:Bug #4179: OpenStruct#method_missing handles #[]= wronglyhttp://redmine.ruby-lang.org/issues/show/4179Erm, not quite sure why reloading the redmine page triggered another notification about the ticket to be sent to the list. Apologies about that.C---Caius [e-mail][phone]http://caius.name/
=end

[marcandre (Marc-Andre Lafortune)]

• Project changed from Ruby 1.8 to Ruby master
• Category changed from lib to lib
• Target version deleted (Ruby 1.8.7)

[marcandre (Marc-Andre Lafortune)]

• Status changed from Open to Closed
• Target version set to 1.9.3
• % Done changed from 0 to 100

Thanks for the patch.
It was modified so that:

• s[] also raises an error
• s[1]=2 states that "[]=" is the missing method (not "[]")

Applied as r31753, RubySpec updated as 9d36c78