src/share/vm/logging/log.hpp

@@ -86,10 +86,12 @@
   // Make sure no more than the maximum number of tags have been given.
   // The GuardTag allows this to be detected if/when it happens. If the GuardTag
   // is not __NO_TAG, the number of tags given exceeds the maximum allowed.
   STATIC_ASSERT(GuardTag == LogTag::__NO_TAG); // Number of logging tags exceeds maximum supported!
 
+  Log() {}
+
   static bool is_level(LogLevelType level) {
     return LogTagSetMapping<T0, T1, T2, T3, T4>::tagset().is_level(level);
   }
 
   template <LogLevelType Level>