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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Parser<LexerType>::parseFunctionInfo() has the wrong info about captured vars when a function is not cached."
href="https://bugs.webkit.org/show_bug.cgi?id=160671">160671</a>
</td>
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<tr>
<th>Summary</th>
<td>Parser<LexerType>::parseFunctionInfo() has the wrong info about captured vars when a function is not cached.
</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>
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<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>mark.lam@apple.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=285595" name="attach_285595" title="Repro test case.">attachment 285595</a> <a href="attachment.cgi?id=285595&action=edit" title="Repro test case.">[details]</a></span>
Repro test case.
Steps to repro:
1. Apply the following patch to disable the function cache.
Index: Source/JavaScriptCore/parser/Parser.cpp
===================================================================
--- Source/JavaScriptCore/parser/Parser.cpp (revision 204127)
+++ Source/JavaScriptCore/parser/Parser.cpp (working copy)
@@ -1954,6 +1954,7 @@ template <class TreeBuilder> bool Parser
FunctionBodyType functionBodyType;
auto loadCachedFunction = [&] () -> bool {
+ if (true) return false;
ASSERT(parametersStart != -1);
ASSERT(startColumn != -1);
2. Run jsc on the attached test case.
It ends up throwing the following invalid error:
Exception: ReferenceError: Can't find variable: inner
/Volumes/Data/objcjsc/tests/test.js:9:52
foo2@/Volumes/Data/objcjsc/tests/test.js:12:17
goo2@/Volumes/Data/objcjsc/tests/test.js:14:9
global code@/Volumes/Data/objcjsc/tests/test.js:15:3</pre>
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