From: "ydah (Yudai Takada) via ruby-core" <ruby-core@ml.ruby-lang.org>
To: ruby-core@ml.ruby-lang.org
Cc: "ydah (Yudai Takada)" <noreply@ruby-lang.org>
Subject: [ruby-core:120481] [Ruby master Bug#21003] unexpected warning about ignored block
Date: Sun, 05 Jan 2025 00:17:01 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-111265.20250105001701.8259@ruby-lang.org> (raw)
In-Reply-To: <redmine.issue-21003.20250104134116.8259@ruby-lang.org>
Issue #21003 has been updated by ydah (Yudai Takada).
memo) This does not occur even in Ruby 3.4.1 when `--parser=parse.y`.
```
❯ ruby --parser=parse.y -e '$VERBOSE = true
def foo(*, &block) = block
def bar(buz, ...) = foo(buz, ...)
bar(:test) {}'
~
❯ ruby --parser=parse.y -v -e '$VERBOSE = true
def foo(*, &block) = block
def bar(buz, ...) = foo(buz, ...)
bar(:test) {}'
ruby 3.4.1 (2024-12-25 revision 48d4efcb85) [arm64-darwin23]
```
----------------------------------------
Bug #21003: unexpected warning about ignored block
https://bugs.ruby-lang.org/issues/21003#change-111265
* Author: decuplet (Nikita Shilnikov)
* Status: Open
* ruby -v: ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +PRISM [arm64-darwin24]
* Backport: 3.1: DONTNEED, 3.2: DONTNEED, 3.3: DONTNEED, 3.4: REQUIRED
----------------------------------------
I stumbled upon this during the upgrade to 3.4. Here's the minimal repro:
```ruby
$VERBOSE = true
def foo(*, &block) = block
def bar(buz, ...) = foo(buz, ...)
bar(:test) {}
```
It gives
```
ruby reproduce.rb
reproduce.rb:6: warning: the block passed to 'Object#bar' defined at reproduce.rb:4 may be ignored
```
where I believe it shouldn't. No warning reported if I change `def bar(buz, ...)` to `def bar(...)`.
--
https://bugs.ruby-lang.org/
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next prev parent reply other threads:[~2025-01-05 0:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-04 13:41 [ruby-core:120476] " decuplet (Nikita Shilnikov) via ruby-core
2025-01-05 0:17 ` ydah (Yudai Takada) via ruby-core [this message]
2025-01-05 18:30 ` [ruby-core:120487] " kddnewton (Kevin Newton) via ruby-core
2025-02-14 1:51 ` [ruby-core:121004] " k0kubun (Takashi Kokubun) via ruby-core
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