* call.c (perform_implicit_conversion): Deal with error_mark_node.

From-SVN: r29475

gcc/cp/ChangeLog

+1999-09-17  Nathan Sidwell  <nathan@acm.org>
+
+	* call.c (perform_implicit_conversion): Deal with error_mark_node.
+
 1999-09-17  Mark Mitchell  <mark@codesourcery.com>
 
 	* cp-tree.h (poplevel_class): Declare.

gcc/cp/call.c

@@ -5130,7 +5130,8 @@ perform_implicit_conversion (type, expr)
 				   LOOKUP_NORMAL);
   if (!conv || ICS_BAD_FLAG (conv))
     {
-      cp_error ("could not convert `%E' to `%T'", expr, type);
+      if (expr != error_mark_node)
+        cp_error ("could not convert `%E' to `%T'", expr, type);
       return error_mark_node;
     }