Please review RC 6 available at
http://www.cse.unsw.edu.au/~chak/haskell/ffi/
A change log is appended. This version features a rather
large number of changes over the last version, which is
making me a bit uneasy, as I hoped that the spec would
converge soon. But many of these changes have been prompted
by Alastair and Malcolm bringing their systems in line,
which is probably the most effective way of debugging the
spec.
Cheers,
Manuel
-=-
* Author list: changed Alastair Reid's institution
* 1.4: Clarified the wording
* 4.1: Explicitly stated that access to pre-processor symbols is not
provided by the FFI
* 4.1.1: Removed [lib] from impent syntax and discussion
* 4.1.3: Added parentheses round FunPtr ft to make it easier to
understand a tolerably complex type.
* 4.1.4: Removed all mention of library objects; clarified that header files
do not impact the semantics of foreign calls, but may be required
for correct code generation by some systems
* 5.2: Clarified that all operations in Bits are member functions of the
type class. Reverse the meaning of the sign of the second argument
for `rotate' and `shift' (this makes it the same as GHC used all
the time). `bitSize' on `Integer' etc is now undefined.
* 5.5: Finalisers must be external functions to facilitate the
implementation on Haskell systems that do not support pre-emptive
concurrency.
Added mallocForeignPtr and mallocForeignPtrBytes.
* 6: Specified that HsBool==int in table2
Relabelled column 1 in table 3 (C symbol -> CPP symbol)
Replaced 0 and 1 with HS_BOOL_FALSE/TRUE
* 6.1: Clarified that nullPtr (nullFunPtr) coincides with (HsPtr) NULL and
(HsFunPtr) NULL, respectively.
Allowing multiple calls to hs_init() and clarified the constraints
on the relative timing between hs_set_argv() and
getProgName/getArgs.
Added hs_perform_gc().
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