PR c++/58407 - deprecated implicit copy ops.

gcc/c-family/
	* c.opt (Wdeprecated-copy): New flag.
gcc/cp/
	* call.c (build_over_call): Warn about deprecated trivial fns.
	* class.c (classtype_has_user_copy_or_dtor): New.
	(type_build_ctor_call): Check TREE_DEPRECATED.
	(type_build_dtor_call): Likewise.
	* decl2.c (cp_warn_deprecated_use): Move from tree.c.
	Add checks.  Return bool.  Handle -Wdeprecated-copy.
	(mark_used): Use it.
	* decl.c (grokdeclarator): Remove redundant checks.
	* typeck2.c (build_functional_cast): Likewise.
	* method.c (lazily_declare_fn): Mark deprecated copy ops.
	* init.c (build_aggr_init): Only set TREE_USED if there are
	side-effects.
libitm/
	* beginend.cc (save): Disable -Werror=deprecated-copy.

From-SVN: r260381

1 files changed, 29 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/cpp0x/depr-copy1.C b/gcc/testsuite/g++.dg/cpp0x/depr-copy1.C
new file mode 100644
index 0000000..d33c6dc
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/depr-copy1.C
@@ -0,0 +1,29 @@
+/* [depr.impldec] The implicit definition of a copy constructor as defaulted is
+   deprecated if the class has a user-declared copy assignment operator or a
+   user-declared destructor. The implicit definition of a copy assignment
+   operator as defaulted is deprecated if the class has a user-declared copy
+   constructor or a user-declared destructor (15.4, 15.8). In a future revision
+   of this International Standard, these implicit definitions could become
+   deleted (11.4).  */
+
+// { dg-additional-options -Wdeprecated-copy }
+
+struct X
+{
+  X();
+  X(const X&);
+};
+struct A
+{
+  X x;
+  ~A();
+};
+
+void f(bool b)
+{
+  A a;
+  if (b)
+    throw A();			// Don't warn about elided copy
+  A a2 = A();			// Here either.
+  A a3 (a);			// { dg-warning "deprecated" "" { target c++11 } }
+}