re PR c++/19149 (seg fault on invalid code)

	PR c++/19149
	* decl.c (check_tag_decl): Robustify.

	PR c++/19149
	* g++.dg/parse/error23.C: New test.

From-SVN: r92648

gcc/cp/ChangeLog

+2004-12-27  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/19149
+	* decl.c (check_tag_decl): Robustify.
+
 2004-12-23  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/17595

gcc/cp/decl.c

@@ -3514,7 +3514,8 @@ check_tag_decl (cp_decl_specifier_seq *declspecs)
       return NULL_TREE;
     }
 
-  if (TYPE_P (declspecs->type)
+  if (declspecs->type
+      && TYPE_P (declspecs->type)
       && ((TREE_CODE (declspecs->type) != TYPENAME_TYPE
 	   && IS_AGGR_TYPE (declspecs->type))
 	  || TREE_CODE (declspecs->type) == ENUMERAL_TYPE))

gcc/testsuite/ChangeLog

+2004-12-27  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/19149
+	* g++.dg/parse/error23.C: New test.
+
 2004-12-27  Tobias Schlueter  <tobias.schlueter@physik.uni-muenchen.de>
 
 	* gfortran.dg/g77/f90-intrinsic-bit.f: New.

gcc/testsuite/g++.dg/parse/error23.C

+// PR c++/19149
+
+struct QChar {
+  QChar( char c );
+  QChar( const QChar& c );
+  static const ; // { dg-error "" }
+};