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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Win] Null pointer crash."
href="https://bugs.webkit.org/show_bug.cgi?id=149957#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [Win] Null pointer crash."
href="https://bugs.webkit.org/show_bug.cgi?id=149957">bug 149957</a>
from <span class="vcard"><a class="email" href="mailto:peavo@outlook.com" title="peavo@outlook.com">peavo@outlook.com</a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=149957#c3">comment #3</a>)
<span class="quote">> Comment on <span class=""><a href="attachment.cgi?id=262776&action=diff" name="attach_262776" title="Patch">attachment 262776</a> <a href="attachment.cgi?id=262776&action=edit" title="Patch">[details]</a></span>
> Patch
>
> While this might fix the crash, I think it's the wrong fix.
>
> A cell with a null structureID has been garbage collected. You're lucky if
> you find the null structureID -- that happens soon after sweeping. If you're
> unlucky, you'll just get garbage memory, or a crash.
>
> We need to investigate how cell got garbage collected in the first place.</span >
Ok, sounds good :)
This is the state of the JSCell object when the crash occured:
m_structureID 0x00000000 JSC::Structure*
m_indexingType 0 unsigned char
m_type StringType JSC::JSType
m_flags 224 unsigned char
m_cellState NewWhite JSC::CellState</pre>
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