1 files changed, 4 insertions, 1 deletions
diff --git a/src/flags.h b/src/flags.h
index b75fdc21..3e94ab31 100644
--- a/src/flags.h
+++ b/src/flags.h
@@ -45,9 +45,12 @@ public:
   supports_flags() : flags_(0) {
     TRACE_CTOR(supports_flags, "");
   }
-  supports_flags(const flags_t& arg) : flags_(arg) {
+  supports_flags(const supports_flags& arg) : flags_(arg.flags_) {
     TRACE_CTOR(supports_flags, "copy");
   }
+  supports_flags(const flags_t& arg) : flags_(arg) {
+    TRACE_CTOR(supports_flags, "const flags_t&");
+  }
   ~supports_flags() throw() {
     TRACE_DTOR(supports_flags);
   }