Bug #12178: Enumerable#inject(:+) doesn't respect redefined Fixnum#+

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONTNEED

[usa (Usaku NAKAMURA)]

r54120以降、Fixnum#+ を再定義している場合(する奴はいないとは思うものの)、inject(:+) の中で再定義後のメソッドが呼ばれなくなります。

C:\> ruby -ve "class Fixnum; def +(o); self*o; end; end; p [1,3,5].inject(:+)"
ruby 2.4.0dev (2016-03-15 trunk 54118) [x64-mswin64_100]
-e:1: warning: method redefined; discarding old +
15

C:\> ruby -ve "class Fixnum; def +(o); self*o; end; end; p [1,3,5].inject(:+)"
ruby 2.4.0dev (2016-03-15 trunk 54120) [x64-mswin64_100]
-e:1: warning: method redefined; discarding old +
9

C:\> ruby -ve "class Fixnum; def +(o); self*o; end; end; p [1,3,5].inject(&:+)"
ruby 2.4.0dev (2016-03-15 trunk 54120) [x64-mswin64_100]
-e:1: warning: method redefined; discarding old +
15

[akr (Akira Tanaka)]

• Status changed from Open to Closed

Fixed at r54122

[usa (Usaku NAKAMURA)]

• Backport changed from 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN to 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONTNEED