Closed
Bug 1178381
Opened 11 years ago
Closed 11 years ago
AbstractFramePtr should be wrapper around mozilla::Variant instead of implementing its own tagged union
Categories
(Core :: JavaScript Engine, defect)
Core
JavaScript Engine
Tracking
()
RESOLVED
WONTFIX
People
(Reporter: fitzgen, Unassigned)
References
Details
Would clean up the code quite nicely.
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Comment 1•11 years ago
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How many words is Variant? AbstractFramePtr uses the low-bits pointer tagging trick.
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Reporter | |
Comment 2•11 years ago
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(In reply to Shu-yu Guo [:shu] from comment #1)
> How many words is Variant? AbstractFramePtr uses the low-bits pointer
> tagging trick.
Ah, dang. Variant uses a whole word for the tag because it doesn't know anything about its contained types and can't make assumptions.
Status: NEW → RESOLVED
Closed: 11 years ago
Resolution: --- → WONTFIX
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Description
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