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<head>
<base href="https://bugs.webkit.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash in WebCore::GraphicsContext::platformContext()"
href="https://bugs.webkit.org/show_bug.cgi?id=170602">170602</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Crash in WebCore::GraphicsContext::platformContext()
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>Safari Technology Preview
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>URL</th>
<td>http://substance.io/examples/tangle/
</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>WebCore Misc.
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dieter@komendera.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=306507" name="attach_306507" title="crash log">attachment 306507</a> <a href="attachment.cgi?id=306507&action=edit" title="crash log">[details]</a></span>
crash log
To reproduce:
1) go to <a href="http://substance.io/examples/tangle/">http://substance.io/examples/tangle/</a>
2) click and drag the green number 2050
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x00000001087a4a67 WebCore::GraphicsContext::platformContext() const + 7
1 com.apple.WebKit 0x0000000107e41933 WebKit::WebDragClient::startDrag(WebCore::DragImage, WebCore::IntPoint const&, WebCore::IntPoint const&, WebCore::FloatPoint const&, WebCore::DataTransfer&, WebCore::Frame&, WebCore::DragSourceAction) + 239
2 com.apple.WebCore 0x0000000108c7ea0b WebCore::DragController::doSystemDrag(WebCore::DragImage, WebCore::IntPoint const&, WebCore::IntPoint const&, WebCore::IntRect const&, WebCore::DataTransfer&, WebCore::Frame&, WebCore::DragSourceAction) + 427
3 com.apple.WebCore 0x0000000108c7dd0f WebCore::DragController::startDrag(WebCore::Frame&, WebCore::DragState const&, WebCore::DragOperation, WebCore::PlatformMouseEvent const&, WebCore::IntPoint const&) + 6207
4 com.apple.WebCore 0x0000000108939843 WebCore::EventHandler::handleDrag(WebCore::MouseEventWithHitTestResults const&, WebCore::CheckDragHysteresis) + 2467
5 com.apple.WebCore 0x0000000108cc292a WebCore::EventHandler::handleMouseDraggedEvent(WebCore::MouseEventWithHitTestResults const&, WebCore::CheckDragHysteresis) + 58
6 com.apple.WebCore 0x00000001088a6db9 WebCore::EventHandler::handleMouseMoveEvent(WebCore::PlatformMouseEvent const&, WebCore::HitTestResult*, bool) + 1337
7 com.apple.WebCore 0x00000001088a66c0 WebCore::EventHandler::mouseMoved(WebCore::PlatformMouseEvent const&) + 160
8 com.apple.WebKit 0x0000000107c8eb14 WebKit::WebPage::mouseEvent(WebKit::WebMouseEvent const&) + 612
Safari Technology Preview Release 27 (Safari 10.2, WebKit 12604.1.15.2)</pre>
</div>
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