hsc: Passing -1 as CString/Ptr a?

[Marcin 'Qrczak' Kowalczyk]

Thu, 22 Nov 2001 13:57:32 +0100, Volker Stolz <vs@foldr.org> pisze:

> Hi, I want to invoke the C-function 'dlsym', which has three 
> possible options for a parameter of type (void*):
> 
> - NULL
> - void* to a string, i.e. CString in Haskell
> - RTLD_NEXT = (void *)(-1)

You can obtain the value from an embedded C function.

foreign import unsafe rtldNext :: Ptr a
#def inline void *rtldNext (void) {return RTLD_NEXT;}

-- 
 __("<  Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/
 \__/
  ^^
QRCZAK