[#120855] [Ruby master Bug#21104] Net::HTTP connections failing in Ruby >= 3.4.0 on macOS with Happy Eyeballs enabled — "mjt58 (Mike Thompson) via ruby-core" <ruby-core@...>

Issue #21104 has been reported by mjt58 (Mike Thompson).

14 messages 2025/02/01

[#120873] [Ruby master Bug#21111] RbConfig::CONFIG['CXX'] quietly set to "false" when Ruby cannot build C++ programs — "stanhu (Stan Hu) via ruby-core" <ruby-core@...>

Issue #21111 has been reported by stanhu (Stan Hu).

10 messages 2025/02/03

[#120884] [Ruby master Bug#21115] Etc.getgrgid is not Ractor-safe but is marked as such — "Eregon (Benoit Daloze) via ruby-core" <ruby-core@...>

Issue #21115 has been reported by Eregon (Benoit Daloze).

7 messages 2025/02/05

[#120897] [Ruby master Bug#21119] Programs containing `Dir.glob` with a thread executing a CPU-heavy task run very slowly. — "genya0407 (Yusuke Sangenya) via ruby-core" <ruby-core@...>

Issue #21119 has been reported by genya0407 (Yusuke Sangenya).

6 messages 2025/02/06

[#121054] [Ruby master Bug#21139] Prism and parse.y parses `it = it` differently — "tompng (tomoya ishida) via ruby-core" <ruby-core@...>

Issue #21139 has been reported by tompng (tomoya ishida).

19 messages 2025/02/14

[#121060] [Ruby master Feature#21140] Add a method to get the address of certain JIT related functions — "tenderlovemaking (Aaron Patterson) via ruby-core" <ruby-core@...>

Issue #21140 has been reported by tenderlovemaking (Aaron Patterson).

23 messages 2025/02/14

[#121077] [Ruby master Misc#21143] Speficy order of execution const_added vs inherited — "fxn (Xavier Noria) via ruby-core" <ruby-core@...>

Issue #21143 has been reported by fxn (Xavier Noria).

15 messages 2025/02/17

[#121142] [Ruby master Misc#21154] Document or change Module#autoload? — "fxn (Xavier Noria) via ruby-core" <ruby-core@...>

Issue #21154 has been reported by fxn (Xavier Noria).

32 messages 2025/02/23

[#121172] [Ruby master Feature#21157] Comparison operator <> — lpogic via ruby-core <ruby-core@...>

SXNzdWUgIzIxMTU3IGhhcyBiZWVuIHJlcG9ydGVkIGJ5IGxwb2dpYyAoxYF1a2FzeiBQb21pZXTF

11 messages 2025/02/26

[ruby-core:121076] [Ruby master Bug#21142] Lazy enumerator `.each_with_index` ignores `.take(0)` before it

From: "aaronkison (Aaron Kison) via ruby-core" <ruby-core@...>
Date: 2025-02-17 00:26:36 UTC
List: ruby-core #121076
Issue #21142 has been reported by aaronkison (Aaron Kison).

----------------------------------------
Bug #21142: Lazy enumerator `.each_with_index` ignores `.take(0)` before it
https://bugs.ruby-lang.org/issues/21142

* Author: aaronkison (Aaron Kison)
* Status: Open
* ruby -v: 3.2.7 
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
Minimum code to produce problem:
```
class Numbers; def each; 100.times { yield _1 }; end; include Enumerable; end

Numbers.new.lazy.take(0).each_with_index.map { _1 }.to_a
```

Output (at ruby 3.2.7, and 3.3.0):
```
[0, 1, ..., 99]
```

Expected output (and was as at ruby 3.1.4):
```
[]
```

It works when it opposite ordering: `Numbers.new.lazy.each_with_index.take(0).map { _1 }.to_a`.
I suspect it may be related to the change here https://github.com/ruby/ruby/pull/11868/files but I'm not familiar with any of that code. It seems like it replaces an allocated index with a counting index, which my hunch is it works for every value except for 0.



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