re PR c++/57041 (ICE in lookup_field_1, at cp/search.c:376 (with dot-prefixed…

re PR c++/57041 (ICE in lookup_field_1, at cp/search.c:376 (with dot-prefixed structure initialisation))

	PR c++/57041
	* pt.c (tsubst_copy_and_build): Don't recur into a designator.

From-SVN: r198887

gcc/cp/ChangeLog

+2013-05-14  Jason Merrill  <jason@redhat.com>
+
+	PR c++/57041
+	* pt.c (tsubst_copy_and_build): Don't recur into a designator.
+
 2013-05-14  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/53903

gcc/cp/pt.c

@@ -14401,7 +14401,10 @@ tsubst_copy_and_build (tree t,
         newlen = vec_safe_length (n);
 	FOR_EACH_VEC_SAFE_ELT (n, idx, ce)
 	  {
-	    if (ce->index && process_index_p)
+	    if (ce->index && process_index_p
+		/* An identifier index is looked up in the type
+		   being initialized, not the current scope.  */
+		&& TREE_CODE (ce->index) != IDENTIFIER_NODE)
 	      ce->index = RECUR (ce->index);
 
             if (PACK_EXPANSION_P (ce->value))

gcc/testsuite/g++.dg/ext/desig6.C

 // PR c++/57041
 // { dg-options "-std=gnu++11" }
-// { dg-prune-output "error:" }
 
 template<typename T>
 union u {