[ruby-core:96829] [Ruby master Bug#10929] NilClass#to_proc and & don't mix?
From:
ko1@...
Date:
2020-01-14 02:31:43 UTC
List:
ruby-core #96829
Issue #10929 has been updated by ko1 (Koichi Sasada).
Status changed from Feedback to Rejected
it can break delegation methods.
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Bug #10929: NilClass#to_proc and & don't mix?
https://bugs.ruby-lang.org/issues/10929#change-83828
* Author: trans (Thomas Sawyer)
* Status: Rejected
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
* Target version:
* ruby -v: ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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This is sort of like a "who would ever care" kind of bug. Nonetheless technically it seems like it is one. So I thought it best that I report it just the same.
~~~
class NilClass
def to_proc
Proc.new{ |*x| nil }
end
end
def f(&b)
b.call(1)
end
f(&nil)
=> NoMethodError: undefined method `call' for nil:NilClass
~~~
(Maybe it was fixed already. Filing out this issue reminded me I need to update my version of Ruby.)
---Files--------------------------------
block_from_nil.patch (771 Bytes)
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