[ruby-core:120506] [Ruby master Bug#21006] `defined?((receiver).method)` raises Stack consistency error

6 Jan 2025


      Issue #21006 has been reported by tompng (tomoya ishida).

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Bug #21006: `defined?((receiver).method)` raises Stack consistency error
https://bugs.ruby-lang.org/issues/21006

* Author: tompng (tomoya ishida)
* Status: Open
* ruby -v: ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +YJIT +MN +PRISM [arm64-darwin22]
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
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~~~
$ ruby -ve "defined?((foo).bar)"
ruby 3.4.1 (2024-12-25 revision 48d4efcb85) +YJIT +MN +PRISM [arm64-darwin22]
-e:1: warning: possibly useless use of defined? in void context
-e:1: [BUG] Stack consistency error (sp: 7, bp: 6)

~~~


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