<h2 id="%5Bbug-%2321006%5D-defined%3F((receiver).method)-raises-stack-consistency-error" data-line="0" class="code-line">
<a class="header-anchor-link" href="#%5Bbug-%2321006%5D-defined%3F((receiver).method)-raises-stack-consistency-error" aria-hidden="true"></a> <a href="https://bugs.ruby-lang.org/issues/21006" target="_blank" rel="nofollow noopener noreferrer">[Bug #21006] <code>defined?((receiver).method)</code> raises Stack consistency error</a>
</h2>
<ul data-line="2" class="code-line">
<li data-line="2" class="code-line">
<code>defined?((receiver).method)</code> を実行した時に <code>Stack consistency error</code> が発生するバグ報告</li>
</ul>
<div class="code-block-container"><pre class="language-ruby"><code class="language-ruby code-line" data-line="4"><span class="token keyword">defined</span><span class="token operator">?</span><span class="token punctuation">(</span><span class="token punctuation">(</span>foo<span class="token punctuation">)</span><span class="token punctuation">.</span>bar<span class="token punctuation">)</span>
</code></pre></div><ul data-line="8" class="code-line">
<li data-line="8" class="code-line">
<code>--parser=parse.y</code> だと発生しなかったので Prism 固有の問題ぽいですかね？</li>
<li data-line="9" class="code-line">この不具合は開発版の Ruby 3.5-dev で修正済みです</li>
</ul>


[Bug #21006] `defined?` で意図せず `Stack consistency error` が発生するバグ報告

[Bug #21006] defined?((receiver).method) raises Stack consistency error

[Bug #21006] `defined?` で意図せず `Stack consistency error` が発生するバグ報告

[Bug #21006] `defined?((receiver).method)` raises Stack consistency error

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