[Haskell-cafe] Where is SNMap for stable names?

[Sean Leather]

There is an abstract type called SNMap for stable names referred to in [1].
This has apparently disappeared from GHC a long time ago. Is it still
available somewhere, or is there a suitable replacement for it?

Regards,
Sean

[1] "Stretching the storage manager: weak pointers and stable names in
Haskell" - http://research.microsoft.com/apps/pubs/default.aspx?id=67497
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