[PATCH v2] include: Declare _STGMEDIUM_UNION type except when it violates C spec.
Jeff Smith
whydoubt at gmail.com
Sun Dec 22 23:56:36 CST 2019
Fixes a regression introduced by 732f67ed38a45911d726df8da5a68710d175ba1d
Based on a patch from Zebediah Figura <z.figura12 at gmail.com>
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=47710
Signed-off-by: Jeff Smith <whydoubt at gmail.com>
---
v2: Take NONAMELESSUNION definition into consideration in determining
what to do with _STGMEDIUM_UNION.
include/objidl.idl | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/include/objidl.idl b/include/objidl.idl
index a0ad1f6e01..a86ceb8b1d 100644
--- a/include/objidl.idl
+++ b/include/objidl.idl
@@ -1426,8 +1426,14 @@ interface IAdviseSink : IUnknown
default: wireHGLOBAL hGeneric;
} GDI_OBJECT;
+ /* When NONAMELESSUNION is not defined, the presence of _STGMEDIUM_UNION
+ * violates the C spec, but is necessary for C++. Avoid C spec violation. */
+ cpp_quote("#if !defined(NONAMELESSUNION) && !defined(__cplusplus)")
+ cpp_quote("#define _STGMEDIUM_UNION")
+ cpp_quote("#endif")
+
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;
@@ -1440,6 +1446,10 @@ interface IAdviseSink : IUnknown
IUnknown *pUnkForRelease;
} userSTGMEDIUM;
+ cpp_quote("#if !defined(NONAMELESSUNION) && !defined(__cplusplus)")
+ cpp_quote("#undef _STGMEDIUM_UNION")
+ cpp_quote("#endif")
+
typedef [unique] userSTGMEDIUM *wireSTGMEDIUM;
typedef [wire_marshal(wireSTGMEDIUM)] uSTGMEDIUM STGMEDIUM;
--
2.23.0
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