* pt.c (unify): Just return 0 for a TYPENAME_TYPE.

From-SVN: r15213

gcc/cp/ChangeLog

+Tue Sep  9 19:49:38 1997  Jason Merrill  <jason@yorick.cygnus.com>
+
+	* pt.c (unify): Just return 0 for a TYPENAME_TYPE.
+
 Tue Sep  9 17:57:25 1997  Mark Mitchell  <mmitchell@usa.net>
 
 	* error.c (dump_decl): Avoid crashing when presented with a

gcc/cp/pt.c

@@ -3141,6 +3141,12 @@ unify (tparms, targs, ntparms, parm, arg, nsubsts, strict)
 
   switch (TREE_CODE (parm))
     {
+    case TYPENAME_TYPE:
+      /* In a type which contains a nested-name-specifier, template
+	 argument values cannot be deduced for template parameters used
+	 within the nested-name-specifier.  */
+      return 0;
+
     case TEMPLATE_TYPE_PARM:
       (*nsubsts)++;
       idx = TEMPLATE_TYPE_IDX (parm);