Enable implicitly deleted functions (N2346)

Enable implicitly deleted functions (N2346)
	* class.c (check_bases_and_members): Adjust lambda flags.
	* method.c (implicitly_declare_fn): Set DECL_DELETED_FN if appropriate.

From-SVN: r161581

gcc/cp/ChangeLog

@@ -1,5 +1,9 @@
 2010-06-29  Jason Merrill  <jason@redhat.com>
 
+	Enable implicitly deleted functions (N2346)
+	* class.c (check_bases_and_members): Adjust lambda flags.
+	* method.c (implicitly_declare_fn): Set DECL_DELETED_FN if appropriate.
+
 	* decl2.c (mark_used): Adjust error for use of deleted function.
 
 	Machinery to support implicit delete/move.

gcc/cp/class.c

@@ -4563,10 +4563,9 @@ check_bases_and_members (tree t)
       /* "The closure type associated with a lambda-expression has a deleted
 	 default constructor and a deleted copy assignment operator."  */
       TYPE_NEEDS_CONSTRUCTING (t) = 1;
-      TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0;
-      CLASSTYPE_LAZY_DEFAULT_CTOR (t) = 0;
-      TYPE_HAS_COPY_ASSIGN (t) = 0;
-      CLASSTYPE_LAZY_COPY_ASSIGN (t) = 0;
+      TYPE_HAS_COMPLEX_DFLT (t) = 1;
+      TYPE_HAS_COMPLEX_COPY_ASSIGN (t) = 1;
+      CLASSTYPE_LAZY_MOVE_ASSIGN (t) = 0;
 
       /* "This class type is not an aggregate."  */
       CLASSTYPE_NON_AGGREGATE (t) = 1;

gcc/cp/method.c

@@ -1408,6 +1408,8 @@ implicitly_declare_fn (special_function_kind kind, tree type, bool const_p)
   DECL_IN_AGGR_P (fn) = 1;
   DECL_ARTIFICIAL (fn) = 1;
   DECL_DEFAULTED_FN (fn) = 1;
+  if (cxx_dialect >= cxx0x)
+    DECL_DELETED_FN (fn) = deleted_p;
   DECL_NOT_REALLY_EXTERN (fn) = 1;
   DECL_DECLARED_INLINE_P (fn) = 1;
   gcc_assert (!TREE_USED (fn));

gcc/testsuite/ChangeLog

@@ -1,5 +1,24 @@
 2010-06-29  Jason Merrill  <jason@redhat.com>
 
+	Enable implicitly deleted functions (N2346)
+	* g++.dg/cpp0x/defaulted17.C: New.
+	* g++.dg/cpp0x/implicit1.C: New.
+	* g++.dg/cpp0x/implicit2.C: New.
+	* g++.dg/cpp0x/lambda/lambda-ctor-neg.C: Adjust.
+	* g++.dg/ext/has_virtual_destructor.C: Adjust.
+	* g++.dg/init/ctor4.C: Adjust.
+	* g++.dg/init/synth2.C: Adjust.
+	* g++.dg/lto/20081118_1.C: Adjust.
+	* g++.dg/other/error13.C: Adjust.
+	* g++.dg/other/unused1.C: Adjust.
+	* g++.old-deja/g++.bob/inherit2.C: Adjust.
+	* g++.old-deja/g++.bugs/900205_04.C: Adjust.
+	* g++.old-deja/g++.jason/opeq3.C: Adjust.
+	* g++.old-deja/g++.law/ctors17.C: Adjust.
+	* g++.old-deja/g++.oliva/delete1.C: Adjust.
+	* g++.old-deja/g++.pt/assign1.C: Adjust.
+	* g++.old-deja/g++.pt/crash20.C: Adjust.
+
 	* g++.dg/cpp0x/defaulted10.C: Adjust for new deleted message.
 	* g++.dg/cpp0x/defaulted13.C: Adjust.
 	* g++.dg/cpp0x/defaulted2.C: Adjust.

gcc/testsuite/g++.dg/cpp0x/defaulted17.C

@@ -0,0 +1,12 @@
+// { dg-options -std=c++0x }
+
+struct A			// { dg-error "const|operator=" }
+{
+  const int i;
+};
+
+int main()
+{
+  A a = { 0 };
+  a = a;			// { dg-error "deleted" }
+}

gcc/testsuite/g++.dg/cpp0x/implicit1.C

@@ -0,0 +1,26 @@
+// Test for implicitly deleted destructors.
+// { dg-options "-std=c++0x" }
+// { dg-prune-output "default definition would be ill-formed" }
+// { dg-prune-output "within this context" }
+
+class C
+{
+  void operator delete (void *); // { dg-error "private" }
+public:
+  virtual ~C();			// { dg-error "overriding" }
+};
+
+struct D: C { };		// { dg-error "deleted" }
+D d;				// { dg-error "deleted" }
+
+struct E
+{
+  ~E() = delete;		// { dg-error "declared here" }
+};
+
+struct F
+{
+  virtual ~F();			// { dg-error "overriding" }
+};
+
+struct G: E, F { };		// { dg-error "deleted" }

gcc/testsuite/g++.dg/cpp0x/implicit2.C

@@ -0,0 +1,33 @@
+// Test that the synthesized C copy constructor calls the A template
+// constructor and has the appropriate exception specification.
+// { dg-options -std=c++0x }
+// { dg-do run }
+
+int r = 1;
+
+struct A
+{
+  A() {}
+  A(const A&) throw () { }
+  template <class T>
+  A(T& t) { r = 0; }
+};
+
+struct B
+{
+  B() {}
+  B(B&) throw () { }
+};
+
+struct C: A, B { };
+
+#define SA(E) static_assert(E, #E)
+
+C c;
+SA (!noexcept(C(c)));
+
+int main()
+{
+  (C(c));
+  return r;
+}

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ctor-neg.C

@@ -3,7 +3,7 @@
 void f()
 {
   int i;
-  auto lam = [i]{};		// { dg-message "note" }
+  auto lam = [i]{};		// { dg-message "" }
   decltype(lam) lam2 = { 1 };	// { dg-error "" "not an aggregate" }
   decltype(lam) lam3;		// { dg-error "" "deleted default ctor" }
   lam3 = lam;			// { dg-error "" "deleted assignment op" }
@@ -12,7 +12,7 @@ void f()
 template <class T>
 void g(T i)
 {
-  auto lam = [i]{};		// { dg-message "note" }
+  auto lam = [i]{};		// { dg-message "" }
   decltype(lam) lam2 = { 1 };	// { dg-error "" "not an aggregate" }
   decltype(lam) lam3;		// { dg-error "" "deleted default ctor" }
   lam3 = lam;			// { dg-error "" "deleted assignment op" }

gcc/testsuite/g++.dg/ext/has_virtual_destructor.C

@@ -14,15 +14,15 @@ union U
   double b;
 };
 
-class B
+struct B
 {
   virtual ~B() { }
 };
 
-class C
+struct C
 : public B { };
 
-class D
+struct D
 {
   ~D() { }
 };

gcc/testsuite/g++.dg/init/ctor4.C

@@ -6,7 +6,7 @@ public:
   foo();
 };
 
-class bar: public foo {// { dg-error "uninitialized" }
+class bar: public foo {		// { dg-error "reference|bar::bar" }
 private:
   int &a;
 };
@@ -16,5 +16,5 @@ foo::foo() {
 
 int main(int argc, char **argv)
 {
-  bar x; // { dg-message "synthesized" }
+  bar x; // { dg-message "synthesized|deleted" }
 }

gcc/testsuite/g++.dg/init/synth2.C

@@ -5,7 +5,7 @@ struct G {
   G(G&);			// { dg-message "" "candidate" }
 };
 
-class A				// { dg-error "no match" }
+class A				// { dg-error "" }
 {
   const G g;
 };

gcc/testsuite/g++.dg/lto/20081118_1.C

@@ -1,4 +1,5 @@
 class object {
+public:
   virtual ~object() {}
 };
 

gcc/testsuite/g++.dg/other/error13.C

@@ -5,6 +5,6 @@ struct A			// { dg-message "note" }
   A(void x); // { dg-error "invalid use|incomplete type|candidates" }
 };
 
-struct B : A {}; // { dg-error "no matching function for call" }
+struct B : A {}; // { dg-error "no matching function for call|deleted" }
  
-B b; // { dg-message "synthesized method" }
+B b; // { dg-message "synthesized method|deleted" }

gcc/testsuite/g++.dg/other/unused1.C

@@ -32,7 +32,7 @@ int bar4 (void)
   return const_cast<printer *>(dotmatrix)->i;
 }
 
-class class1 { virtual ~class1(); } *c1;
+class class1 { public: virtual ~class1(); } *c1;
 class class2 : class1 { char j; };
 int bar5 (void)
 {

gcc/testsuite/g++.old-deja/g++.bob/inherit2.C

@@ -10,7 +10,7 @@ private:
   const A& operator =(const A &) { abort(); }
 };
 
-class B : public A { // { dg-error "within" }
+class B : public A { // { dg-error "" }
 public:
   B(void) {}
 };
@@ -20,5 +20,5 @@ void f(B b) {			// { dg-error "initializing" }
 
 void g() {
   B h;
-  f(h);  // { dg-message "synthesized" "synth" }
+  f(h);  // { dg-message "synthesized|deleted" "synth" }
 }

gcc/testsuite/g++.old-deja/g++.bugs/900205_04.C

@@ -23,9 +23,9 @@ struct0::struct0 (int, void *) // { dg-message "note" }
 {
 }
 
-struct struct0_derived_struct_0 : public struct0 { // { dg-error "no matching" }
+struct struct0_derived_struct_0 : public struct0 { // { dg-error "no matching|deleted" }
 };
 
-struct0_derived_struct_0 object; // { dg-message "synthesized" }
+struct0_derived_struct_0  object; // { dg-message "synthesized|deleted" }
 
 int main () { return 0; }

gcc/testsuite/g++.old-deja/g++.jason/opeq3.C

@@ -1,7 +1,7 @@
 // { dg-do assemble  }
 // Bug: g++ generates code for assignment in invalid situations.
 
-class X { // { dg-error "assignment" }
+class X { // { dg-error "reference|operator=" }
   int& a;
 public:
   X(int& i): a(i) { }
@@ -11,5 +11,5 @@ void foo ()
 {
   int one=1, two=2;
   X a(one), b(two);
-  a = b;			// { dg-message "synthesized" }
+  a = b;			// { dg-message "synthesized|deleted" }
 }

gcc/testsuite/g++.old-deja/g++.law/ctors17.C

@@ -6,10 +6,12 @@
 // Subject: gcc 2.4.3.1: illegal constructor call not rejected
 // Date: Tue, 15 Jun 1993 18:34:14 +0200 (MET DST)
 
+// C++0x mode doesn't print the deleted copy constructor as a candidate.
+// { dg-prune-output ":14:" }
 
 #include <fstream>
 
-class X : public std::ifstream { // { dg-message "note" } candidate
+class X : public std::ifstream {
     public:
       X(int a, const char *b) {} // { dg-message "note" } candidate
 };

gcc/testsuite/g++.old-deja/g++.oliva/delete1.C

@@ -28,5 +28,4 @@ struct baz : foo {
   virtual ~baz() {} // { dg-error "" } delete is private in vdtor
 } baz_;
 
-struct bad : baz {} bad_; // { dg-error "" } delete is private in vdtor
-// { dg-message "synthesized" "note" { target *-*-* } 31 }
+struct bad : baz {} bad_; // { dg-message "" } delete is private in vdtor

gcc/testsuite/g++.old-deja/g++.pt/assign1.C

@@ -2,7 +2,7 @@
 // Origin: Mark Mitchell <mark@codesourcery.com>
 
 template <class T>
-struct S { // { dg-error "assignment" }
+struct S {			// { dg-error "const|operator=" }
   S();
   T t;
 };
@@ -10,5 +10,5 @@ struct S { // { dg-error "assignment" }
 void f()
 {
   S<const int> s;
-  s = s; // { dg-message "synthesized" }
+  s = s; // { dg-message "synthesized|deleted" }
 }

gcc/testsuite/g++.old-deja/g++.pt/crash20.C

@@ -1,8 +1,7 @@
 // { dg-do compile  }
 
 template <class T = int>
-struct A { // { dg-error "assignment" "assignment" }
-// { dg-message "instantiated" "inst" { target *-*-* } 4 }
+struct A { // { dg-message "const|operator=" "assignment" }
   const T x;
   A() : x(0) { } A(T x) : x(x) { }
 }; 
@@ -11,7 +10,7 @@ template <class B>
 void func ()
 {
   B y; 
-  y = B();  // { dg-message "synthesized" }
+  y = B();  // { dg-message "synthesized|deleted" }
 }
 
 int main (void) { func< A<> >(); }