Hello all,

Working away at making the current tip of spice build the win32 client. I have run into another problem.

Since the last working win32 cllient build the code generated by spice_codegen.py has shifted from CPP files to C files. The generated files include messages.h.

Inside messages.h there is a structure SpiceMsgEmpty which is empty. Empty structures in C have 0 bytes and are not defined in the spec. VC++ treats this as a hard error (C2015) and so refuses to compile the code. gcc does not treat this as an error, so mingw and gcc builds have not noticed this.

  How do we want to handle this.

We could put a single padding member in that structure that would allow the compile to work, but it would make the structure size expand to a byte and have an unused member.

If I have the VC++ build path continue to generate cpp files instead of C files then there are issues with the bindings defined in client_demarshallers.h and the SPICE_BEGIN_DECLS lines will have to be #ifdefed out for win32.

  Thanks!
-aric
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