typeck2.c (build_x_arrow): Early return if decay_conversion returns error_mark_node.

/gcc
2019-11-20  Paolo Carlini  <paolo.carlini@oracle.com>

	* typeck2.c (build_x_arrow): Early return if decay_conversion
	returns error_mark_node.

/testsuite
2019-11-20  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/parse/error43.C: Adjust expected error.

From-SVN: r278530

gcc/cp/ChangeLog

+2019-11-20  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* typeck2.c (build_x_arrow): Early return if decay_conversion
+	returns error_mark_node.
+
 2019-11-20  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/90767

gcc/cp/typeck2.c

@@ -2044,7 +2044,11 @@ build_x_arrow (location_t loc, tree expr, tsubst_flags_t complain)
 	last_rval = convert_from_reference (last_rval);
     }
   else
+    {
       last_rval = decay_conversion (expr, complain);
+      if (last_rval == error_mark_node)
+	return error_mark_node;
+    }
 
   if (TYPE_PTR_P (TREE_TYPE (last_rval)))
     {

gcc/testsuite/ChangeLog

+2019-11-20  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* g++.dg/parse/error43.C: Adjust expected error.
+
 2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>
 
 	* README: Use https for gcc.gnu.org.

gcc/testsuite/g++.dg/parse/error43.C

@@ -2,4 +2,4 @@
 // { dg-options "" }
 
 class C { public: C* f(); int get(); };
-int f(C* p) { return p->f->get(); }  // { dg-error "forget the '\\(\\)'|base operand" }
+int f(C* p) { return p->f->get(); }  // { dg-error "25:invalid use of member function" }