IfcException.h: suppress C4275 warnings

cmake/CMakeLists.txt

@@ -66,7 +66,8 @@ if (BUILD_SHARED_LIBS)
     add_definitions(-DBUILD_SHARED_LIBS)
     if (MSVC)
         message(WARNING "Building DLLs against the static VC run-time. This is not recommended if the DLLs are to be redistributed.")
-        # There will be couple hundreds of these so suppress them away.
+        # C4521: 'identifier' : class 'type' needs to have dll-interface to be used by clients of class 'type2'
+        # There will be couple hundreds of these so suppress them away, https://msdn.microsoft.com/en-us/library/esew7y1w.aspx
         add_definitions(-wd4251)
     endif()
     set(IFCDIRS "${LIBDIR}")

src/ifcparse/IfcException.h

@@ -25,6 +25,13 @@
 #include <exception>
 #include <string>
 
+#ifdef _MSC_VER
+// "C4275 can be ignored in Visual C++ if you are deriving from a type in the Standard C++ Library",
+// https://msdn.microsoft.com/en-us/library/3tdb471s.aspx
+#pragma warning(push)
+#pragma warning(disable : 4275)
+#endif
+
 namespace IfcParse {
 	class IfcParse_EXPORT IfcException : public std::exception {
 	private:
@@ -38,7 +45,7 @@ namespace IfcParse {
 		}
 	};
 
-	class IfcAttributeOutOfRangeException : public IfcException {
+	class IfcParse_EXPORT IfcAttributeOutOfRangeException : public IfcException {
 	public:
 		IfcAttributeOutOfRangeException(const std::string& e)
 			: IfcException(e) {}
@@ -46,4 +53,8 @@ namespace IfcParse {
 	};
 }
 
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+
 #endif