[#77789] [Ruby trunk Feature#12012] Add Boolean method — prodis@...
Issue #12012 has been updated by Fernando Hamasaki de Amorim.
4 messages
2016/10/27
[ruby-core:77684] [Ruby trunk Bug#12855] Inconsistent keys identity in compare_by_identity Hash when using literals
From:
eregontp@...
Date:
2016-10-20 12:35:49 UTC
List:
ruby-core #77684
Issue #12855 has been reported by Benoit Daloze.
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Bug #12855: Inconsistent keys identity in compare_by_identity Hash when using literals
https://bugs.ruby-lang.org/issues/12855
* Author: Benoit Daloze
* Status: Open
* Priority: Normal
* Assignee:
* ruby -v: ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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This seems a regression since 2.2.
I would guess it's due to some optimization for having a string literal between []=.
That optimization should not trigger for compare_by_identity hashes, so both cases below are consistent.
~~~ruby
h = {}.compare_by_identity
h['pear'] = 1
h['pear'] = 2
p h.size # => 1
p h
h = {}.compare_by_identity
k1 = 'pear'
h[k1] = 1
k2 = 'pear'
h[k2] = 2
p h.size # => 2
p h
~~~
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