[MLton-user] NLFFI incompatibility with SML/NJ?

[Adam Chlipala]

I've had great success using the NLFFI with both MLton and SML/NJ in the 
development of an OpenSSL binding.  However, there's one nagging 
difference that I've found in the typing of the automatically-generated 
signatures, forcing me to create my own tiny "compatibility" signature 
that has different implementations for the different compilers.

The example I've come across so far has to do with the return type of, 
for instance, C.Get.uchar'.  In SML/NJ, the right WORD structure to use to
manipulate these values is Word32.  In MLton, it seems to be 
MLRep.Char.Unsigned.

Have I missed a common alias for these structures that works in both 
MLton and SML/NJ?