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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Assertion failure for Reflect.get with Proxy and explicit receiver object"
href="https://bugs.webkit.org/show_bug.cgi?id=157083">157083</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failure for Reflect.get with Proxy and explicit receiver object
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Local 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>andre.bargull@gmail.com
</td>
</tr></table>
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<div>
<pre>SVN: rev200124
Build with: perl Tools/Scripts/build-jsc --gtk --debug
The following test case triggers this assertion error:
---
ASSERTION FAILED: prototype.isObject()
---
Test case:
---
Reflect.get(new Proxy({},{}), "x", {})
---
Stack trace:
---
#0 0x00007ffff6e289ac in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:322
#1 0x00007ffff6cf22a7 in JSC::performProxyGet (exec=0x7fffffffcae0, thisValue=140736127155904, propertyName=...) at ../../Source/JavaScriptCore/runtime/ProxyObject.cpp:112
#2 0x00007ffff6cebb4e in JSC::PropertySlot::customGetter (this=0x7fffffffca80, exec=0x7fffffffcae0, propertyName=...) at ../../Source/JavaScriptCore/runtime/PropertySlot.cpp:39
#3 0x00000000004423b2 in JSC::PropertySlot::getValue (this=0x7fffffffca80, exec=0x7fffffffcae0, propertyName=...) at ../../Source/JavaScriptCore/runtime/PropertySlot.h:294
#4 0x0000000000448cfb in JSC::JSValue::get (this=0x7fffffffca40, exec=0x7fffffffcae0, propertyName=..., slot=...) at ../../Source/JavaScriptCore/runtime/JSCJSValueInlines.h:768
#5 0x00007ffff6cfc288 in JSC::reflectObjectGet (exec=0x7fffffffcae0) at ../../Source/JavaScriptCore/runtime/ReflectObject.cpp:181
#6 0x00007fffb0bff028 in ?? ()
#7 0x00007fffffffcb60 in ?? ()
#8 0x00007ffff6a33818 in llint_entry () from /home/andre/svn/webkit/WebKitBuild/Debug/lib/libjavascriptcoregtk-4.0.so.18
Backtrace stopped: frame did not save the PC
---</pre>
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