> I can't imagine just chopping "struct" off a type declaration (moving > it from one namespace to another!) can be the solution. Can we start > with an example? > > I tried generating a shim for the API you gave and had no problem. > > (typedef a (struct (x int))) > > (extern (* a) test_func (arg (* a)))
You are of course entirely correct, I omitted the typedef (and used a named struct), which resulted (correctly) in incorrect C code. The above code works fine! > There IS a problem with > > (extern a test_func (arg a)) > > signaled by a warning "Unexpected return type: (struct (x . int))". > (It could call that an "unsupported return type", and warn about the > type of ARG too.) I've been playing around with the shim C code, is there a way I can create an alien that contains a struct? Then it should be possible to support structs as return and parameter types. Are aliens garbage-collected automatically? Can I just malloc some memory for an alien, then cons_alien it, then expect it to be garbage-collected later? Thanks for helping me with my questions here! Peter _______________________________________________ MIT-Scheme-devel mailing list MIT-Scheme-devel@gnu.org https://lists.gnu.org/mailman/listinfo/mit-scheme-devel
