From: "Earlopain (Earlopain _) via ruby-core" <ruby-core@...>
Date: 2025-10-27T10:39:02+00:00
Subject: [ruby-core:123546] [Ruby Bug#21648] [prism] ruby crashes for `for * in [10]; end`

Issue #21648 has been reported by Earlopain (Earlopain _).

----------------------------------------
Bug #21648: [prism] ruby crashes for `for * in [10]; end`
https://bugs.ruby-lang.org/issues/21648

* Author: Earlopain (Earlopain _)
* Status: Open
* ruby -v: ruby 3.4.6 (2025-09-16 revision dbd83256b1) +PRISM [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
```sh
$ ruby -e "for * in [10]; end"
-e:1: [BUG] Stack consistency error (sp: 15, bp: 14)
ruby 3.4.6 (2025-09-16 revision dbd83256b1) +PRISM [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0004 p:0008 s:0015 e:000013 BLOCK  -e:1 [FINISH]
c:0003 p:---- s:0010 e:000009 CFUNC  :each
c:0002 p:0005 s:0006 e:000005 EVAL   -e:1 [FINISH]
c:0001 p:0000 s:0003 E:0014c0 DUMMY  [FINISH]
...
```

`parse.y` handles this

---Files--------------------------------
crash.txt (19.7 KB)


-- 
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