This is currently part of the dmd test suite [1]:
extern (C++) interface E
{
int bar(int i, int j, int k);
}
extern (C++) int callE(E);
static assert (callE.mangleof == "_Z5callEP1E");
The last line checks that callE() will pass its argument by
pointer.
This is fine in the case where E is a D interface because of
reference semantics: it should be passed by pointer.
But, in the case where an extern(C++) function calls an
extern(C++) type should it be value semantic - as it is in C++ -
or reference semantic - as it is in D?
Thoughts?
--
1.
https://github.com/dlang/dmd/blob/master/test/compilable/cppmangle.d#L102
