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    <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 - Crash in WebCore::Animation::~Animation"
   href="https://bugs.webkit.org/show_bug.cgi?id=168083">168083</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Crash in WebCore::Animation::~Animation
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </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>Animations
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>mcatanzaro&#64;igalia.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dino&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=301091" name="attach_301091" title="Backtrace">attachment 301091</a> <a href="attachment.cgi?id=301091&amp;action=edit" title="Backtrace">[details]</a></span>
Backtrace

I hit this crash today when watching a YouTube video. It reminds me of <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Crash in WebCore::Animation::animationsMatch"
   href="show_bug.cgi?id=164913">bug #164913</a>, but it's different. Truncated backtrace:

0x00007fdf1395f390 in WTF::RefCounted&lt;WebCore::TimingFunction&gt;::deref() const (this=0x7fde4845d5b0)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/RefCounted.h:145
#1  0x00007fdf1395f390 in WTF::derefIfNotNull&lt;WebCore::TimingFunction&gt;(WebCore::TimingFunction*) (ptr=&lt;optimized out&gt;)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/PassRefPtr.h:40
#2  0x00007fdf1395f390 in WTF::RefPtr&lt;WebCore::TimingFunction&gt;::~RefPtr() (this=0x7fde149b89f0, __in_chrg=&lt;optimized out&gt;)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/RefPtr.h:62
#3  0x00007fdf1395f390 in WebCore::Animation::~Animation() (this=0x7fde149b89c0, __in_chrg=&lt;optimized out&gt;)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WebCore/platform/animation/Animation.cpp:126
#4  0x00007fdf13c95a13 in WTF::RefCounted&lt;WebCore::Animation&gt;::deref() const (this=0x7fde149b89c0)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/RefCounted.h:145
#5  0x00007fdf13c95a13 in WTF::derefIfNotNull&lt;WebCore::Animation&gt;(WebCore::Animation*) (ptr=&lt;optimized out&gt;)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/PassRefPtr.h:40
#6  0x00007fdf13c95a13 in WTF::RefPtr&lt;WebCore::Animation&gt;::~RefPtr() (this=0x7fde7981b600, __in_chrg=&lt;optimized out&gt;)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/RefPtr.h:62
#7  0x00007fdf13c95a13 in WTF::VectorDestructor&lt;true, WTF::RefPtr&lt;WebCore::Anima---Type &lt;return&gt; to continue, or q &lt;return&gt; to quit---
tion&gt; &gt;::destruct(WTF::RefPtr&lt;WebCore::Animation&gt;*, WTF::RefPtr&lt;WebCore::Animation&gt;*) (end=0x7fde7981b608, begin=&lt;optimized out&gt;)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/Vector.h:60
#8  0x00007fdf13c95a13 in WTF::VectorTypeOperations&lt;WTF::RefPtr&lt;WebCore::Animation&gt; &gt;::destruct(WTF::RefPtr&lt;WebCore::Animation&gt;*, WTF::RefPtr&lt;WebCore::Animation&gt;*) (end=&lt;optimized out&gt;, begin=&lt;optimized out&gt;)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/Vector.h:224
#9  0x00007fdf13c95a13 in WTF::Vector&lt;WTF::RefPtr&lt;WebCore::Animation&gt;, 0ul, WTF::CrashOnOverflow, 16ul&gt;::shrink(unsigned long) (size=0, this=0x7fddf79cb570)
    at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/Vector.h:1023
#10 0x00007fdf13c95a13 in WTF::Vector&lt;WTF::RefPtr&lt;WebCore::Animation&gt;, 0ul, WTF::CrashOnOverflow, 16ul&gt;::~Vector() (this=0x7fddf79cb570, __in_chrg=&lt;optimized out&gt;) at /usr/src/debug/webkitgtk-2.14.3/Source/WTF/wtf/Vector.h:631

Full backtrace attached.</pre>
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