<html>
<head>
<base href="https://bugs.webkit.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Variable::isReadOnly() and Variable::isConst() are almost the same"
href="https://bugs.webkit.org/show_bug.cgi?id=160970">160970</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Variable::isReadOnly() and Variable::isConst() are almost the same
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>OS</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>JavaScriptCore
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jfbastien@apple.com
</td>
</tr></table>
<p>
<div>
<pre>It looks like BytecodeGenerator::emitReadOnlyExceptionIfNeeded() is the only one that uses Variable::isConst() in: `isStrictMode() || variable.isConst()`.
isConst is: `isReadOnly() && m_isLexicallyScoped`.
All calls to emitReadOnlyExceptionIfNeeded are guarded by isReadOnly().
This means that the code for emitReadOnlyExceptionIfNeeded is equivalent to: `isReadOnly && (isStrictMode || (isReadOnly && m_isLexicallyScoped))`.
isReadOnly is only set by BytecodeGenerator::variable</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>