re PR c++/84663 (internal compiler error: tree check: expected array_type, have…

re PR c++/84663 (internal compiler error: tree check: expected array_type, have error_mark in cp_complete_array_type, at cp/decl.c:8334)

	PR c++/84663
	* decl.c (cp_complete_array_type): Check error_mark_node.

	* g++.dg/parse/array-size3.C: New test.

From-SVN: r258148

gcc/cp/ChangeLog

+2018-03-02  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/84663
+	* decl.c (cp_complete_array_type): Check error_mark_node.
+
 2018-03-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/84662

gcc/cp/decl.c

@@ -8323,7 +8323,7 @@ cp_complete_array_type (tree *ptype, tree initial_value, bool do_default)
      bits.  See also complete_type which does the same thing for arrays
      of fixed size.  */
   type = *ptype;
-  if (TYPE_DOMAIN (type))
+  if (type != error_mark_node && TYPE_DOMAIN (type))
     {
       elt_type = TREE_TYPE (type);
       TYPE_NEEDS_CONSTRUCTING (type) = TYPE_NEEDS_CONSTRUCTING (elt_type);

gcc/testsuite/ChangeLog

@@ -3,6 +3,9 @@
 	PR c++/84171
 	* g++.dg/warn/Wsign-compare-8.C: New test.
 
+	PR c++/84663
+	* g++.dg/parse/array-size3.C: New test.
+
 2018-03-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/84662

gcc/testsuite/g++.dg/parse/array-size3.C

+// PR c++/84663
+
+struct S {
+  typedef S T[8];
+  int f : -1ULL; // { dg-warning "exceeds its type" }
+  S () { struct { T d; } e[]; } // { dg-error "size" }
+};