#5218: Add unpackCStringLen# to create Strings from string literals -------------------------------------+------------------------------------- Reporter: tibbe | Owner: thoughtpolice Type: feature request | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 7.0.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #5877 #10064 | Differential Rev(s): Phab:D2443 Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari):
Fair enough, but why not just poke a hole in the `ByteArray#` abstraction in that case? Namely, provide a `unsafeMkByteArray# :: Addr# -> Int -> ByteArray#`.
Although, thinking about this for a tad longer it's not necessarily clear that this is a direction which we'd want to go. Afterall, it would require the introduction of another closure type since the current representation requires that the bytes directly follow the closure header. I suspect this would introduce quite a bit of complexity in the RTS. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/5218#comment:62 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler