* [ruby-core:95746] [Ruby master Bug#16332] `defined?` constant access on `nil` is inconsistent with normal constant access
[not found] <redmine.issue-16332.20191107164207@ruby-lang.org>
@ 2019-11-07 16:42 ` dylan.smith
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From: dylan.smith @ 2019-11-07 16:42 UTC (permalink / raw)
To: ruby-core
Issue #16332 has been reported by dylants (Dylan Thacker-Smith).
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Bug #16332: `defined?` constant access on `nil` is inconsistent with normal constant access
https://bugs.ruby-lang.org/issues/16332
* Author: dylants (Dylan Thacker-Smith)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.7.0dev (2019-11-07T14:33:45Z master d62abc47c8) [x86_64-darwin18]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
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The fix for https://bugs.ruby-lang.org/issues/11718 to disallow constant access through `nil` (e.g. `nil::CONSTANT`) didn't make a corresponding change for `defined?`.
This inconsistency can be seen with the example `nil::Object`, which will raise `TypeError`, even though `defined?(nil::Object)` returns `"constant"`. I believe that `defined?(nil::Object)` should behave the same way as checking if a constant is defined on any other non-namespace object (e.g. `defined?(1::Object)`), which currently returns `nil`.
I've opened pull request https://github.com/ruby/ruby/pull/2657 with a fix for this issue.
--
https://bugs.ruby-lang.org/
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2019-11-07 16:42 ` [ruby-core:95746] [Ruby master Bug#16332] `defined?` constant access on `nil` is inconsistent with normal constant access dylan.smith
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