Bug #20510: File.open mode argument inconsistency

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN

[akr (Akira Tanaka)]

I found that
File.new(1, mode: File::WRONLY, path: "foo") succeeds but
File.new(1, File::WRONLY, path: "foo") fails.

It is inconsistent.
I think they should both succeed.

% ./ruby -e 'p File.new(1, mode: File::WRONLY, path: "foo")'
#<File:foo>
% ./ruby -e 'p File.new(1, File::WRONLY, path: "foo")' 
-e:1:in 'File#initialize': no implicit conversion of Integer into String (TypeError)

p File.new(1, File::WRONLY, path: "foo")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	from -e:1:in 'IO.new'
	from -e:1:in '<main>'
% ./ruby -v                                           
ruby 3.4.0dev (2024-05-25T02:25:56Z tempfile-create-io 99463a8400) [x86_64-linux]

[nobu (Nobuyoshi Nakada)]

File.new(1, File::WRONLY) also succeeds.
https://github.com/ruby/ruby/pull/10844

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|0bae2f00025b6b51a9e0c9e3348d5f5d16c2aae4.

---

[Bug #20510] Do not count optional hash argument for IO.new

Since IO.new accepts one or two positional arguments except for the
optional hash argument, exclude the optional hash argument from the
check for delegation to IO.new.