re PR c++/89512 (ICE in get_expr_operands, at tree-ssa-operands.c:882)

	PR c++/89512
	* semantics.c (finish_qualified_id_expr): Reject variable templates.

	* g++.dg/cpp1y/var-templ61.C: New test.

From-SVN: r269672

gcc/cp/ChangeLog

 2019-03-14  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/89512
+	* semantics.c (finish_qualified_id_expr): Reject variable templates.
+
 	PR c++/89652
 	* constexpr.c (struct constexpr_ctx): Change save_exprs type from
 	hash_set<tree> to vec<tree>.

gcc/cp/semantics.c

@@ -2112,6 +2112,14 @@ finish_qualified_id_expr (tree qualifying_class,
 	expr = build_offset_ref (qualifying_class, expr, /*address_p=*/false,
 				 complain);
     }
+  else if (!template_p
+	   && TREE_CODE (expr) == TEMPLATE_DECL
+	   && !DECL_FUNCTION_TEMPLATE_P (expr))
+    {
+      if (complain & tf_error)
+	error ("%qE missing template arguments", expr);
+      return error_mark_node;
+    }
   else
     {
       /* In a template, return a SCOPE_REF for most qualified-ids

gcc/testsuite/ChangeLog

 2019-03-14  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/89512
+	* g++.dg/cpp1y/var-templ61.C: New test.
+
 	PR c++/89652
 	* g++.dg/cpp1y/constexpr-89652.C: New test.
 

gcc/testsuite/g++.dg/cpp1y/var-templ61.C

+// PR c++/89512
+// { dg-do compile { target c++14 } }
+
+struct A {
+  template <typename T>
+  static const int a = 0;
+};
+
+struct B {
+  template <typename T>
+  static int foo ()
+  {
+    return T::a;		// { dg-error "missing template arguments" }
+  }
+};
+
+int bar ()
+{
+  return B::foo<A> ();		// { dg-message "required from here" }
+}