Updates:
Cc: [email protected]
Comment #2 on issue 3010 by [email protected]: Large object literal
definitions get mangled.
http://code.google.com/p/v8/issues/detail?id=3010
Using the generated testcase with 1025 properties, this bisects to r17606 /
https://codereview.chromium.org/66193004, which reduced the size of the
bitfield in question from 11 to 10. However, even with larger property
counts, I haven't been able to trigger the bug on the previous revision.
Further, only property counts in the range [1025, 1536] trigger the bug.
When we create an object from a literal/boilerplate, we only convert it to
fast mode when it has less than kMaxNumberOfDescriptors = 1024 + 512
properties.
So the bug is that kMaxNumberOfDescriptors is out of sync with
PropertyDetails::FieldIndexField::kSize.
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