<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 - Assertion failure for bound function with custom prototype and Reflect.construct"
href="https://bugs.webkit.org/show_bug.cgi?id=157081">157081</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failure for bound function with custom prototype and Reflect.construct
</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>
<p>
<div>
<pre>SVN: rev200124
Build with: perl Tools/Scripts/build-jsc --gtk --debug
The following test case triggers this assertion error:
---
ASSERTION FAILED: prototype != baseStructure->storedPrototype()
---
Test case:
---
Reflect.construct(Array, [], Object.defineProperty(function(){}.bind(), "prototype", {value: Array.prototype}));
---
Stack trace:
---
#0 0x00007ffff6e289ac in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:322
#1 0x00007ffff6bbf328 in JSC::InternalFunctionAllocationProfile::createAllocationStructureFromBase (this=0x7fffaedb3ea0, vm=..., owner=0x7fffaedb3e80, prototype=0x7fffaedd36a0,
baseStructure=0x7fffaedf4380) at ../../Source/JavaScriptCore/bytecode/InternalFunctionAllocationProfile.h:50
#2 0x00007ffff6bbf443 in JSC::FunctionRareData::createInternalFunctionAllocationStructureFromBase (this=0x7fffaedb3e80, vm=..., prototype=0x7fffaedd36a0, baseStructure=0x7fffaedf4380)
at ../../Source/JavaScriptCore/runtime/FunctionRareData.h:90
#3 0x00007ffff6bbf200 in JSC::InternalFunction::createSubclassStructure (exec=0x7fffffffc800, newTarget=..., baseClass=0x7fffaedf4380) at ../../Source/JavaScriptCore/runtime/InternalFunction.cpp:115
#4 0x0000000000447887 in JSC::JSGlobalObject::arrayStructureForIndexingTypeDuringAllocation (this=0x7fffaede7900, exec=0x7fffffffc800, indexingType=3 '\003', newTarget=...)
at ../../Source/JavaScriptCore/runtime/JSGlobalObject.h:506
#5 0x00000000004478c5 in JSC::JSGlobalObject::arrayStructureForProfileDuringAllocation (this=0x7fffaede7900, exec=0x7fffffffc800, profile=0x0, newTarget=...)
at ../../Source/JavaScriptCore/runtime/JSGlobalObject.h:510
#6 0x00007ffff600afb9 in JSC::constructArray (exec=0x7fffffffc800, profile=0x0, globalObject=0x7fffaede7900, values=..., newTarget=...) at ../../Source/JavaScriptCore/runtime/JSGlobalObject.h:766
#7 0x00007ffff6b2efd6 in JSC::constructArrayWithSizeQuirk (exec=0x7fffffffc800, args=..., newTarget=...) at ../../Source/JavaScriptCore/runtime/ArrayConstructor.cpp:101
#8 0x00007ffff6b2f03c in JSC::constructWithArrayConstructor (exec=0x7fffffffc800) at ../../Source/JavaScriptCore/runtime/ArrayConstructor.cpp:107
#9 0x00007ffff6a2da0a in vmEntryToNative () at ../../Source/JavaScriptCore/runtime/Butterfly.h:58
#10 0x00007ffff6998ae5 in JSC::Interpreter::executeConstruct (this=0x7ffff0def058, callFrame=0x7fffffffcae0, constructor=0x7fffaedbbe00, constructType=<incomplete type>, constructData=..., args=...,
newTarget=...) at ../../Source/JavaScriptCore/interpreter/Interpreter.cpp:1090
#11 0x00007ffff6b8a3ac in JSC::construct (exec=0x7fffffffcae0, constructorObject=..., constructType=<incomplete type>, constructData=..., args=..., newTarget=...)
at ../../Source/JavaScriptCore/runtime/ConstructData.cpp:52
#12 0x00007ffff6cfbbd8 in JSC::reflectObjectConstruct (exec=0x7fffffffcae0) at ../../Source/JavaScriptCore/runtime/ReflectObject.cpp:130
#13 0x00007fffb0bff028 in ?? ()
#14 0x00007fffffffcb60 in ?? ()
#15 0x00007ffff6a33818 in llint_entry () at ../../Source/JavaScriptCore/runtime/Butterfly.h:58
Backtrace stopped: frame did not save the PC
---</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>