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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Assertion "SHOULD NEVER BE REACHED" when returning DataView from species constructor in TypedArray#slice"
href="https://bugs.webkit.org/show_bug.cgi?id=166846">166846</a>
</td>
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<th>Summary</th>
<td>Assertion "SHOULD NEVER BE REACHED" when returning DataView from species constructor in TypedArray#slice
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
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<th>Version</th>
<td>WebKit Local Build
</td>
</tr>
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<th>Hardware</th>
<td>Unspecified
</td>
</tr>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>JavaScriptCore
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
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<th>Reporter</th>
<td>andre.bargull@gmail.com
</td>
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<div>
<pre>SVN: rev210506
Build with: perl Tools/Scripts/build-jsc --gtk --debug
Executing the following test case leads to this assertion:
---
SHOULD NEVER BE REACHED
../../Source/JavaScriptCore/runtime/JSGenericTypedArrayViewPrototypeFunctions.h(506) : JSC::EncodedJSValue JSC::genericTypedArrayViewProtoFuncSlice(JSC::VM&, JSC::ExecState*) [with ViewClass = JSC::JSGenericTypedArrayView<JSC::Int8Adaptor>; JSC::EncodedJSValue = long int]
1 0x7ffff6d6ab21 /home/andre/svn/webkit/WebKitBuild/Debug/lib/libjavascriptcoregtk-4.0.so.18(WTFCrash+0x1e) [0x7ffff6d6ab21]
2 0x7ffff6baead3 /home/andre/svn/webkit/WebKitBuild/Debug/lib/libjavascriptcoregtk-4.0.so.18(_ZN3JSC35genericTypedArrayViewProtoFuncSliceINS_23JSGenericTypedArrayViewINS_11Int8AdaptorEEEEElRNS_2VMEPNS_9ExecStateE+0x9b8) [0x7ffff6baead3]
3 0x7ffff6b92879 /home/andre/svn/webkit/WebKitBuild/Debug/lib/libjavascriptcoregtk-4.0.so.18(+0x2635879) [0x7ffff6b92879]
4 0x7fffaf3ff028 [0x7fffaf3ff028]
---
Test case:
---
var ta = new Int8Array([1, 2, 3, 4]);
ta.constructor = {
[Symbol.species]: function() {
return new DataView(ta.buffer);
}
};
ta.slice(0, 2);
---</pre>
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