Bug #11155: Files named 'b' cannot be autoloaded

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.0dev (2015-05-14 trunk 50494) [x86_64-darwin14]
• Backport: 2.0.0: REQUIRED, 2.1: DONE, 2.2: DONE

[tenderlovemaking (Aaron Patterson)]

I have two files:

a.rb

module A
  autoload :C, 'b'
end

p ::A::C

b.rb

puts "START"
module A
  class C
  end
end
puts "FINISH"

When I run a.rb, I get an exception:

[aaron@TC xxx (master)]$ ruby --disable-gems -I. a.rb 
START
/Users/aaron/git/xxx/b.rb:3:in `<module:A>': uninitialized constant A::C (NameError)
	from /Users/aaron/git/xxx/b.rb:2:in `<top (required)>'
	from a.rb:5:in `require'
	from a.rb:5:in `<main>'
[aaron@TC xxx (master)]$

If I change the file to something else, like c, then the exception will not happen. This seems to break on every version that implements autoload.

• Status changed from Open to Closed

Applied in changeset r50515.

---

• load.c (loaded_feature_path): stop returning false negatives for
  filenames which are trailing substrings of file extensions. For
  example, 'b', which a trailing substring of ".rb" should not return
  false. [Bug #11155][ruby-core:69206]

• test/ruby/test_autoload.rb: test for fix

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: REQUIRED

[usa (Usaku NAKAMURA)]

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

ruby_2_1 r50805 merged revision(s) 50515.

[nagachika (Tomoyuki Chikanaga)]

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

Backported into ruby_2_2 branch at r50835.