Closes #29

core/dbc_parser.cpp

@@ -80,7 +80,7 @@ namespace {
 
     DbcDiagnosticCode StatementErrorCode(const std::string &keyword) {
         if (keyword == "SG_MUL_VAL_")
-            return DbcDiagnosticCode::UnsupportedStatement;
+            return DbcDiagnosticCode::InvalidMultiplexing;
         if (keyword == "VAL_")
             return DbcDiagnosticCode::InvalidValueDescription;
         return DbcDiagnosticCode::InvalidStatement;
@@ -173,6 +173,7 @@ DbcParseResult DbcParser::ParseFileWithDiagnostics(const std::string &filePath)
     try {
         context.ResolveComments(filePath);
         context.ResolveValueDescriptions(filePath);
+        context.ResolveMultiplexing(filePath);
         context.ValidateMultiplexing(filePath);
         context.ResolveAttributes(filePath, result.diagnostics);
     } catch (const DbcDiagnosticError &error) {