Ambiguous type variable(s) `t'
in the constraint `PrelGHC.CCallable t'
arising from an argument in the _ccall_ to `foo', namely `(undefined ())' at cc001.hs:5
- in the definition of function `f': _ccall_ foo (undefined ())
+ In the definition of `f': _ccall_ foo (undefined ())
cc002.hs:10:
No instance for `PrelGHC.CReturnable ForeignObj'
arising from the result of the _ccall_ to `a' at cc002.hs:10
- in the definition of function `a': _ccall_ a
+ In the definition of `a': _ccall_ a
-Cannot generalise these overloadings (in a _ccall_):
- PrelGHC.CReturnable a arising from the result of the _ccall_ to `f' at cc004.hs:8
-
-Cannot generalise these overloadings (in a _ccall_):
- PrelGHC.CReturnable a arising from the result of the _ccall_ to `f' at cc004.hs:15
-
cc004.hs:8:
Ambiguous type variable(s) `a'
in the constraint `PrelGHC.CReturnable a'
arising from the result of the _ccall_ to `f' at cc004.hs:8
In the first argument of `thenADR', namely `_ccall_ f'
- in the definition of function `foo':
+ In the definition of `foo':
(_ccall_ f) `thenADR` (\ a -> return (a + 1))
cc004.hs:8:
in the constraint `PrelGHC.CReturnable a'
arising from the result of the _ccall_ to `f' at cc004.hs:15
In the first argument of `thenADR', namely `_ccall_ f'
- in the definition of function `bar':
+ In the definition of `bar':
(_ccall_ f) `thenADR` (\ a -> return (a + 1))
cc004.hs:15:
cc005.hs:7:
Unacceptable argument type in foreign declaration: Int#
- When checking declaration:
- foreign export _ccall "foo" foo :: Int# -> IO ()
+ When checking declaration: foreign export foo foo :: Int# -> IO ()
cc005.hs:10:
Unacceptable result type in foreign declaration: Int#
- When checking declaration:
- foreign export _ccall "bar" bar :: Int -> Int#
+ When checking declaration: foreign export bar bar :: Int -> Int#