[Bug 47041] New: wire_marshal attribute ignored and the underlying type is used instead

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=47041

            Bug ID: 47041
           Summary: wire_marshal attribute ignored and the underlying type
                    is used instead
           Product: Wine
           Version: 3.2
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rpc
          Assignee: wine-bugs at winehq.org
          Reporter: richard at torproject.org
      Distribution: ---

Assuming the following idl snippet:

typedef struct _FooWindowHandle {long data1; long data2;};
typedef [unique] FooWindowHandle * fooWH;
cpp_quote("#if 0")
typedef [wire_marshal(fooWH)] void* WH;
cpp_quote("#endif // 0")

The wire_marshal attribute appears to be ignored, and for interfaces using the
WH type, void* is used instead. As _FooWindowHandle ends up not being used, its
definition is not included in the final tlb.

I've created a branch with a min-repro here:

https://github.com/pospeselr/mingw-widl-bug/tree/wire_marshal_bug

This branch includes the typelib generated by the midl.exe version 8.01.0622
from the VS 2019 SDK. Also note that I'm working against version 3.2 today, but
this issue also occurs in version 4.5.

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