Re: expose strlen from Foreign.C.String
Viktor Dukhovni <[email protected]>
| Newsgroups | gmane.comp.lang.haskell.libraries |
|---|---|
| Message-ID | <[email protected]> |
> On Jan 21, 2021, at 1:39 AM, chessai <[email protected]> wrote: >> On Wed, Jan 20, 2021, 17:01 Viktor Dukhovni <[email protected]> wrote: >>> On Wed, Jan 20, 2021 at 09:54:30AM -0800, chessai wrote: >>> >>> I've wanted the following before: >>> >>> foreign import ccall unsafe "strlen" >>> cstringLength# :: Addr# -> Int# >>> >>> cstringLength :: CString -> Int >>> cstringLength (Ptr s) = I# (cstringLength# s) >>> >>> A natural place for this seems to be Foreign.C.String. >> >> Why a new FFI call, rather than `cstringLength#` from ghc-prim: GHC.CString >> (as of GHC 9.0.1): > > I forgot about that addition. In that case we would just need the lifted wrapper No worries, sure the lifted wrapper makes sense, and Foreign.C.String does look like a reasonable place in which to define, and from which to export it. -- Viktor. _______________________________________________ Libraries mailing list [email protected] http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries