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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - RangeError with deep self recursion (Proper tail call)"
href="https://bugs.webkit.org/show_bug.cgi?id=163663">163663</a>
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<th>Summary</th>
<td>RangeError with deep self recursion (Proper tail call)
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>Macintosh
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<th>OS</th>
<td>OS X 10.11
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>JavaScriptCore
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>gijohnson105@gmail.com
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<pre>A RangeError is thrown during a deep self recursion. As stack frames are supposed to be reused if a function is called in tail position, this is unexpected.
```
function decToZero(n) {
return n>0 ? decToZero(n-1) : n;
}
decToZero(42280) // yields "RangeError: Maximum call stack size exceeded."
```
The depth of recursion necessary to blow the stack is not consistent but I've always observed it when n >= 100000.
Hardware:
MacBook Pro (Retina, 15-inch, Mid 2015)
2.5 GHz Intel Core i7
16 GB 1600 MHz DDR3
Webkit: Version 10.0 (11602.1.50.0.10, r207529)</pre>
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