signal_impl: =delete copy and move operations.

Prevent, copy and move constructors and assignment operators from
being generated automatically. These are never used, but this
will make sure of that.
See https://bugzilla.gnome.org/show_bug.cgi?id=756484#c5

1 files changed, 6 insertions, 0 deletions

diff --git a/sigc++/signal_base.h b/sigc++/signal_base.h
index d80fd2d..1842b02 100644
--- a/sigc++/signal_base.h
+++ b/sigc++/signal_base.h
@@ -51,6 +51,12 @@ struct SIGC_API signal_impl
 
   signal_impl();
 
+  signal_impl(const signal_impl& src) = delete;
+  signal_impl& operator=(const signal_impl& src) = delete;
+
+  signal_impl(signal_impl&& src) = delete;
+  signal_impl& operator=(signal_impl&& src) = delete;
+
   // only MSVC needs this to guarantee that all new/delete are executed from the DLL module
 #ifdef SIGC_NEW_DELETE_IN_LIBRARY_ONLY
   void* operator new(size_t size_);