re PR c++/32384 (Pseudo-dtor in template class rejected)

PR c++/32384
	* parser.c (cp_parser_postfix_dot_deref_expression): If
	POSTFIX_EXPRESSION is type dependent, try to parse it as pseudo dtor
	first and if that succeeds and type is SCALAR_TYPE_P, create
	PSEUDO_DTOR_EXPR.

	* g++.dg/template/pseudodtor1.C: New test.
	* g++.dg/template/pseudodtor2.C: New test.

From-SVN: r129836

gcc/cp/ChangeLog

@@ -1,5 +1,11 @@
 2007-11-01  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/32384
+	* parser.c (cp_parser_postfix_dot_deref_expression): If
+	POSTFIX_EXPRESSION is type dependent, try to parse it as pseudo dtor
+	first and if that succeeds and type is SCALAR_TYPE_P, create
+	PSEUDO_DTOR_EXPR.
+
 	PR c++/32260
 	* rtti.c (enum_tinfo_kind): Fix TK_TYPE_INFO_TYPE comment.
 	(typeid_ok_p): Use the same alias set for abi::__type_info_pseudo

gcc/cp/parser.c

@@ -4850,8 +4850,10 @@ cp_parser_postfix_dot_deref_expression (cp_parser *parser,
   pseudo_destructor_p = false;
 
   /* If the SCOPE is a scalar type, then, if this is a valid program,
-     we must be looking at a pseudo-destructor-name.  */
-  if (scope && SCALAR_TYPE_P (scope))
+     we must be looking at a pseudo-destructor-name.  If POSTFIX_EXPRESSION
+     is type dependent, it can be pseudo-destructor-name or something else.
+     Try to parse it as pseudo-destructor-name first.  */
+  if ((scope && SCALAR_TYPE_P (scope)) || dependent_p)
     {
       tree s;
       tree type;
@@ -4860,7 +4862,12 @@ cp_parser_postfix_dot_deref_expression (cp_parser *parser,
       /* Parse the pseudo-destructor-name.  */
       s = NULL_TREE;
       cp_parser_pseudo_destructor_name (parser, &s, &type);
-      if (cp_parser_parse_definitely (parser))
+      if (dependent_p
+	  && (cp_parser_error_occurred (parser)
+	      || TREE_CODE (type) != TYPE_DECL
+	      || !SCALAR_TYPE_P (TREE_TYPE (type))))
+	cp_parser_abort_tentative_parse (parser);
+      else if (cp_parser_parse_definitely (parser))
 	{
 	  pseudo_destructor_p = true;
 	  postfix_expression

gcc/testsuite/ChangeLog

@@ -1,5 +1,9 @@
 2007-11-01  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/32384
+	* g++.dg/template/pseudodtor1.C: New test.
+	* g++.dg/template/pseudodtor2.C: New test.
+
 	PR c++/32260
 	* g++.dg/rtti/typeid7.C: New test.
 

gcc/testsuite/g++.dg/template/pseudodtor1.C

@@ -0,0 +1,44 @@
+// PR c++/32384
+// { dg-do compile }
+
+struct A
+{
+  typedef int T;
+  T foo ();
+
+  A () { foo ().~T (); }
+};
+
+template<typename> struct B
+{
+  typedef int T;
+  T foo ();
+
+  B () { foo ().~T (); }
+};
+
+template<typename T> struct C
+{
+  T t;
+  C () { t.~T (); }
+};
+
+template<typename S> struct D
+{
+  typedef int T;
+  S foo ();
+
+  D () { foo ().~T(); }
+};
+
+struct Z
+{
+  Z () {}
+  ~Z () {}
+};
+
+A a;
+B<int> b;
+C<int> c1;
+C<Z> c2;
+D<int> d;

gcc/testsuite/g++.dg/template/pseudodtor2.C

@@ -0,0 +1,18 @@
+// PR c++/32384
+// { dg-do compile }
+
+template<typename S> struct D
+{
+  typedef int T;
+  S foo ();
+
+  D () { foo ().~T(); }		// { dg-error "is not of type" }
+};
+
+struct Z
+{
+  Z () {}
+  ~Z () {}
+};
+
+D<Z> d;