From: "nagachika (Tomoyuki Chikanaga) via ruby-core" <ruby-core@...>
Date: 2026-05-04T12:33:37+00:00
Subject: [ruby-core:125402] [Ruby Bug#22004] parse.y doesn't executes loop body with `while true || true` condition

Issue #22004 has been updated by nagachika (Tomoyuki Chikanaga).

Backport changed from 3.3: WONTFIX, 3.4: REQUIRED, 4.0: REQUIRED to 3.3: WONTFIX, 3.4: DONE, 4.0: REQUIRED

Backported into ruby_3_4 at commit:fdac94eee1a3f226cafcfa6ec0da97bb08b03369

----------------------------------------
Bug #22004: parse.y doesn't executes loop body with `while true || true` condition
https://bugs.ruby-lang.org/issues/22004#change-117166

* Author: Earlopain (Earlopain _)
* Status: Closed
* ruby -v: ruby 4.1.0dev (2026-04-15T13:47:25Z master d077df24a2) +PRISM [x86_64-linux]
* Backport: 3.3: WONTFIX, 3.4: DONE, 4.0: REQUIRED
----------------------------------------
```rb
while true || true
  puts 1
end
```

This should never exit but with parse.y, the body is never executed. It seems to happen when one of the conditions is a truthy literal. Something similar happens with `unitl`:

```rb
until false && true
  puts 1
end
```

By moving the literals out to methods that just return them, it behaves like I would expect. Seems to have started happening in Ruby 3.3.




-- 
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