Wed Jul 9 03:21:43 PDT 2008 Simon Marlow <[EMAIL PROTECTED]>
* add -fwarn-dodgy-foreign-imports (see #1357)
From the entry in the User's guide:
-fwarn-dodgy-foreign-imports causes a warning to be emitted for
foreign imports of the following form:
foreign import "f" f :: FunPtr t
on the grounds that it probably should be
foreign import "&f" f :: FunPtr t
The first form declares that `f` is a (pure) C function that takes no
arguments and returns a pointer to a C function with type `t`, whereas
the second form declares that `f` itself is a C function with type
`t`. The first declaration is usually a mistake, and one that is hard
to debug because it results in a crash, hence this warning.
M ./compiler/main/DynFlags.hs -1 +4
M ./compiler/typecheck/TcForeign.lhs +9
M ./compiler/typecheck/TcType.lhs +4
M ./docs/users_guide/using.xml -2 +28
View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20080709102143-12142-89b3353f3542c4accb0a1e8ec1f43603d446db8c.gz
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