PRs C++/6803, C++/7721 and C++/7803

        PRs C++/6803, C++/7721 and C++/7803
        * decl.c (grokdeclarator): Gracefully handle template-name as
        decl-specifier.

From-SVN: r58058

gcc/cp/ChangeLog

+2002-10-11  Gabriel Dos Reis  <gdr@integrable-solutions.net>
+
+	PRs C++/6803, C++/7721 and C++/7803
+	* decl.c (grokdeclarator): Gracefully handle template-name as
+	decl-specifier.
+
 2002-10-11  Jason Molenda  <jmolenda@apple.com>
 
 	* init.c (build_field_list): Provide uses_unions_p with a default

gcc/cp/decl.c

@@ -10249,6 +10249,15 @@ grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
 	  case BASELINK:
 	    next = &BASELINK_FUNCTIONS (decl);
 	    break;
+
+	  case TEMPLATE_DECL:
+	    /* Sometimes, we see a template-name used as part of a 
+	       decl-specifier like in 
+	          std::allocator alloc;
+	       Handle that gracefully.  */
+	    error ("invalid use of template-name '%E' in a declarator", decl);
+	    return error_mark_node;
+	    break;
 	    
 	  default:
 	    my_friendly_assert (0, 20020917);

gcc/testsuite/g++.dg/parse/decl-specifier-1.C

+// Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net>
+// Origin: PRs 7721 and 7803
+// { dg-do compile }
+
+namespace N
+{
+    template<typename> 
+    struct X { };
+}
+
+N::X X;                           // { dg-error "" "" }
+
+int main()
+{
+    return sizeof(X);             // { dg-error "" "" }
+}