#5218: Add unpackCStringLen# to create Strings from string literals -------------------------------------+------------------------------------- Reporter: tibbe | Owner: thoughtpolice Type: feature request | Status: new 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): Wiki Page: | -------------------------------------+------------------------------------- Comment (by jscholl): After switching to {{{(# Int#, Addr# #)}}}, I have a sort-of working implementation. The builtin rules seem to work, rewriting string literals from user-code works and has access to the length, but ghci wouldn't even start up. Maybe I can take a look this evening into it, but if I understand unboxed tuples correctly, it should be possible to just flatten them if they appear in an argument position, right? E.g. turn {{{ foo (# a, b, c #) }}} into {{{ foo a b c }}}. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/5218#comment:47 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler