wxCRIT_SECT_* macros compilation fixes for wxUSE_THREADS=0 case

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50160 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/include/wx/thread.h b/include/wx/thread.h
index dcc5ed8b43724022ac3173c0d43c1410172ac1c7..e7dcf882acb9571aa61efe4ecf47f4504840da69 100644 (file)
--- a/include/wx/thread.h
+++ b/include/wx/thread.h
@@ -732,11 +732,12 @@ inline void wxMutexGuiLeave() { }
 
 // macros for entering/leaving critical sections which may be used without
 // having to take them inside "#if wxUSE_THREADS"
-#define wxENTER_CRIT_SECT(cs)
-#define wxLEAVE_CRIT_SECT(cs)
-#define wxCRIT_SECT_DECLARE(cs)
-#define wxCRIT_SECT_DECLARE_MEMBER(cs)
-#define wxCRIT_SECT_LOCKER(name, cs)
+// (the implementation uses dummy structs to force semicolon after the macro)
+#define wxENTER_CRIT_SECT(cs)            do {} while (0)
+#define wxLEAVE_CRIT_SECT(cs)            do {} while (0)
+#define wxCRIT_SECT_DECLARE(cs)          struct wxDummyCS##cs
+#define wxCRIT_SECT_DECLARE_MEMBER(cs)   struct wxDummyCSMember##cs
+#define wxCRIT_SECT_LOCKER(name, cs)     struct wxDummyCSLocker##name
 
 // if there is only one thread, it is always the main one
 inline bool wxIsMainThread() { return true; }