re PR c++/58448 (ICE on invalid: tree_class_check_failed)

/cp
2013-10-04  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/58448
	* pt.c (tsubst): Use error_operand_p on parameter t.

/testsuite
2013-10-04  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/58448
	* g++.dg/template/crash117.C: New.

From-SVN: r203218

gcc/cp/ChangeLog

+2013-10-04  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/58448
+	* pt.c (tsubst): Use error_operand_p on parameter t.
+
 2013-10-04  Marc Glisse  <marc.glisse@inria.fr>
 
 	PR c++/19476

gcc/cp/pt.c

@@ -11272,7 +11272,7 @@ tsubst (tree t, tree args, tsubst_flags_t complain, tree in_decl)
   enum tree_code code;
   tree type, r = NULL_TREE;
 
-  if (t == NULL_TREE || t == error_mark_node
+  if (t == NULL_TREE
       || t == integer_type_node
       || t == void_type_node
       || t == char_type_node
@@ -11281,6 +11281,9 @@ tsubst (tree t, tree args, tsubst_flags_t complain, tree in_decl)
       || TREE_CODE (t) == TRANSLATION_UNIT_DECL)
     return t;
 
+  if (error_operand_p (t))
+    return error_mark_node;
+
   if (DECL_P (t))
     return tsubst_decl (t, args, complain);
 

gcc/testsuite/ChangeLog

+2013-10-04  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/58448
+	* g++.dg/template/crash117.C: New.
+
 2013-10-04  Marc Glisse  <marc.glisse@inria.fr>
 
 	PR c++/19476

gcc/testsuite/g++.dg/template/crash117.C

+// PR c++/58448
+
+class SmallVector; struct Types4;
+template <typename, typename, typename, typename> struct Types {
+  typedef Types4<>::Constructable // { dg-error "template|typedef|expected" }
+} Types<SmallVector, SmallVector, SmallVector, SmallVector>:: > // { dg-error "expected" }