RESOLVED WONTFIX186864
JSImmutableButterfly should zero its data in create 
https://bugs.webkit.org/show_bug.cgi?id=186864
Summary JSImmutableButterfly should zero its data in create
Saam Barati
Reported 2018-06-20 15:01:41 PDT
We currently allocate inside the bytecode generator as we fill in slots. If we don't zero, the GC may see garbage data in the immutable butterfly
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Saam Barati
Comment 1 2018-06-25 17:50:35 PDT
(In reply to Saam Barati from comment #0) > We currently allocate inside the bytecode generator as we fill in slots. If > we don't zero, the GC may see garbage data in the immutable butterfly This happens under a deferGC, so it's not a bug. I also recently added an assert to verify the heap is deferred.
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