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List: ruby-core
Subject: [ruby-core:92894] [Ruby trunk Bug#15889] Enumerator#each_slice size FloatDomainError with infinite e
From: tom () hur ! st
Date: 2019-05-30 19:08:44
Message-ID: redmine.issue-15889.20190530190843.6458a0171427a111 () ruby-lang ! org
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Issue #15889 has been reported by Freaky (Thomas Hurst).
----------------------------------------
Bug #15889: Enumerator#each_slice size FloatDomainError with infinite enumerator
https://bugs.ruby-lang.org/issues/15889
* Author: Freaky (Thomas Hurst)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-freebsd12.0]
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
Calling `#size` on an infinite `each_slice` Enumerator results in a \
`FloatDomainError` exception:
``` ruby
1.step.size # => Infinity
1.step.each_slice(2).size # => FloatDomainError
```
```
Traceback (most recent call last):
...
3: from (irb):3:in `size'
2: from (irb):3:in `div'
1: from (irb):3:in `floor'
FloatDomainError (Infinity)
```
Looks like `enum_each_slice_size()` is missing a guard conditional prior to calling \
`div_int()` with the slice size.
This was reported by Josh Cheek on Twitter: \
https://twitter.com/josh_cheek/status/1134123733445218304
--
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