From: deepjungle.maca@...
Date: 2015-12-18T16:33:29+00:00
Subject: [ruby-core:72367] [Ruby trunk - Bug #11841] [Open] StringIO with read and `nil, ''` arguments broken with enabled frozen string literal

Issue #11841 has been reported by deepj #.

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Bug #11841: StringIO with read and `nil, ''` arguments broken with enabled frozen string literal
https://bugs.ruby-lang.org/issues/11841

* Author: deepj #
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: 
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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I'm not sure what behavior is expected here. But the following use case is used in rack (https://github.com/rack/rack/blob/master/test/spec_lint.rb#L496). If frozen string literal is enabled it throws `read': can't modify frozen String (RuntimeError), otherwise nothing.

~~~
# frozen_string_literal: true

io = StringIO.new('')

io.read(*[nil, ''])
~~~





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