Bug #12098: Accessing a two level hash with invalid keys ignores the right side of expression

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]
• Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE

[michel.boaventura (Michel Boaventura)]

Ruby 2.3 has a strange issue with hashes:

On Ruby 2.2:

irb(main):001:0> foo = {}
=> {}
irb(main):002:0> foo[:bla][:ble] = anything really
NameError: undefined local variable or method `really' for main:Object
        from (irb):2

On Ruby 2.3:

irb(main):001:0> foo = {}
=> {}
irb(main):002:0> foo[:bla][:ble] = anything really
=> nil

But:

irb(main):001:0> foo = {}
=> {}
irb(main):002:0> foo[:bar] = anything really
NameError: undefined local variable or method `really' for main:Object
        from (irb):2

You can put anything which is syntactically valid on the right side and ruby 2.3 will happily ignores it.

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED

Fixed by r53485.

[michel.boaventura (Michel Boaventura)]

Nobuyoshi Nakada wrote:

Fixed by r53485.

Thank you! I should have tested against master. Sorry about that :)

[naruse (Yui NARUSE)]

• Backport changed from 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE