[PATCH 1/5] avicap32: Define NONAMELESSUNION in files that include objidl.h.

[Zebediah Figura]

On 12/17/19 11:37 AM, Alexandre Julliard wrote:
> Zebediah Figura <z.figura12 at gmail.com> writes:
> 
>> Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=47710
>> Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
>> ---
>> This is not currently necessary, but will be with the prescribed solution for
>> bug 47710, viz. defining the type _STGMEDIUM_UNION.
> 
> I'm not sure I understand what fix you are proposing, but if it requires
> Winelib users to also define NONAMELESSUNION I don't think it's a viable
> solution.
> 

Essentially, this:

---
diff --git a/include/objidl.idl b/include/objidl.idl
index a0ad1f6e01f..4c56c422747 100644
--- a/include/objidl.idl
+++ b/include/objidl.idl
@@ -1427,7 +1427,7 @@ interface IAdviseSink : IUnknown
   } GDI_OBJECT;

   typedef struct _userSTGMEDIUM {
-    union switch(DWORD tymed) u {
+    union _STGMEDIUM_UNION switch(DWORD tymed) u {
     case TYMED_NULL:     ;
     case TYMED_MFPICT:   wireHMETAFILEPICT hMetaFilePict;
     case TYMED_ENHMF:    wireHENHMETAFILE hHEnhMetaFile;
---

Which causes warnings anywhere that nameless unions are used:

---
In file included from ../../../wine/include/objbase.h:258,
                 from ../../../wine/include/ole2.h:25,
                 from ../../include/strmif.h:13,
                 from ../../../wine/dlls/wmcodecdspuuid/wmcodecdspuuid.c:22:
../../include/objidl.h:6109:21: warning: declaration does not declare
anything
 6109 |     } DUMMYUNIONNAME;
      |                     ^
---