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Bug #16332
closed`defined?` constant access on `nil` is inconsistent with normal constant access
Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
ruby 2.7.0dev (2019-11-07T14:33:45Z master d62abc47c8) [x86_64-darwin18]
Backport:
Description
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.
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