libcc1: delete copy constructor and assignment operators

Change libcc1 to use "= delete" for the copy constructor and
assignment operator, rather than the old approach of private methods
that are nowhere defined.

libcc1

	* rpc.hh (argument_wrapper): Use delete for copy constructor.
	* connection.hh (class connection): Use delete for copy
	constructor.
	* callbacks.hh (class callbacks): Use delete for copy constructor.

1 files changed, 3 insertions, 4 deletions

diff --git a/libcc1/connection.hh b/libcc1/connection.hh
index a0e99bdbd98..15ad1716a29 100644
--- a/libcc1/connection.hh
+++ b/libcc1/connection.hh
@@ -48,6 +48,9 @@ namespace cc1_plugin
 
     virtual ~connection () = default;
 
+    connection (const connection &) = delete;
+    connection &operator= (const connection &) = delete;
+
     // Send a single character.  This is used to introduce various
     // higher-level protocol elements.
     status send (char c);
@@ -95,10 +98,6 @@ namespace cc1_plugin
 
   private:
 
-    // Declared but not defined, to prevent use.
-    connection (const connection &);
-    connection &operator= (const connection &);
-
     // Helper function for the wait_* methods.
     status do_wait (bool);