#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 winter): If i remember correctly, a `ByteArray#` would have an extra header and a length field, which in turn bring a 2 words overhead, one word more compareing to the `(# int#, addr# #)` solution. But i would argue this overhead can bring a nice solution to ghc's long lasting literal problem, for example, `vector` package and `text` package can provide some TH to directly save some `byteArray#` literal using hexadecimal notation, this save many extra copying during runtime. Finally, by nature of binary loading, this `ByteArray#` is pinned, so we can still get its address without trouble. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/5218#comment:58 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler