[Webkit-unassigned] [Bug 87994] ASSERTION FAILED: m_refCount in DFG::Node:deref with patch from 87158

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=87994





--- Comment #5 from Andy Wingo <wingo at igalia.com>  2012-06-05 08:25:53 PST ---
Interestingly, earlier in the CFG simplification phase, the phi node in question (864) had a refcount of 2.  Simplifying some other part of the graph removed one of the references.  Then block 10 became unreachable, and we go to kill its phi uses.  The only remaining use of 864 is itself, and thus the refcount drops to 0, and the graph goes to unref its children, including itself, but its refcount is already 0, and hence this assertion.

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