[C2hs] [c2hs] #48: Interpreted an int64_t typedef as CInt

c2hs cvs-ghc at haskell.org
Thu Jul 5 09:16:38 CEST 2012

#48: Interpreted an int64_t typedef as CInt
 Reporter:  guest   |        Type:  defect 
   Status:  new     |    Priority:  blocker
Milestone:          |   Component:  general
  Version:  0.16.2  |    Keywords:         

Comment(by guest):

 I managed to track down the problem.  Turns out that the header in
 question indirectly includes <sys/types.h> before it includes <stdint.h>,
 and <sys/types.h> defines int64_t in a way that c2hs doesn't know how to

 $ cpp /usr/include/stdint.h | grep -w int64_t
 typedef long int int64_t;
 $ cpp /usr/include/sys/types.h | grep -w int64_t
 typedef int int64_t __attribute__ ((__mode__ (__DI__)));

 I'd guess that c2hs ignores the GCC-specific __attribute__ that
 overrides the size, and just sees "int".

Ticket URL: <http://hackage.haskell.org/trac/c2hs/ticket/48#comment:1>
c2hs <http://www.cse.unsw.edu.au/~chak/haskell/c2hs/>
C->Haskell, An Interface Generator for Haskell

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