diff --git a/tests/19-param-OK.asn1.-P b/tests/19-param-OK.asn1.-P
index fa6aaf3..5089d3a 100644
--- a/tests/19-param-OK.asn1.-P
+++ b/tests/19-param-OK.asn1.-P
@@ -122,7 +122,6 @@
 	asn1_DEF_toBeSigned_tags,	/* Same as above */
 	sizeof(asn1_DEF_toBeSigned_tags)
 		/sizeof(asn1_DEF_toBeSigned_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_toBeSigned,
 	3,	/* Elements count */
 	&asn1_DEF_toBeSigned_specs	/* Additional specs */
@@ -183,7 +182,6 @@
 	asn1_DEF_Certificate_tags,	/* Same as above */
 	sizeof(asn1_DEF_Certificate_tags)
 		/sizeof(asn1_DEF_Certificate_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Certificate,
 	3,	/* Elements count */
 	&asn1_DEF_Certificate_specs	/* Additional specs */
@@ -245,7 +243,6 @@
 	asn1_DEF_Name_tags,	/* Same as above */
 	sizeof(asn1_DEF_Name_tags)
 		/sizeof(asn1_DEF_Name_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Name,
 	1,	/* Single element */
 	&asn1_DEF_Name_specs	/* Additional specs */
@@ -362,7 +359,6 @@
 	asn1_DEF_RelativeDistinguishedName_tags,	/* Same as above */
 	sizeof(asn1_DEF_RelativeDistinguishedName_tags)
 		/sizeof(asn1_DEF_RelativeDistinguishedName_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_RelativeDistinguishedName,
 	1,	/* Single element */
 	&asn1_DEF_RelativeDistinguishedName_specs	/* Additional specs */
diff --git a/tests/31-set-of-OK.asn1.-P b/tests/31-set-of-OK.asn1.-P
index ce284df..6bf3d7c 100644
--- a/tests/31-set-of-OK.asn1.-P
+++ b/tests/31-set-of-OK.asn1.-P
@@ -54,7 +54,6 @@
 	asn1_DEF_Forest_tags,	/* Same as above */
 	sizeof(asn1_DEF_Forest_tags)
 		/sizeof(asn1_DEF_Forest_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Forest,
 	1,	/* Single element */
 	&asn1_DEF_Forest_specs	/* Additional specs */
@@ -130,7 +129,6 @@
 	asn1_DEF_Tree_tags,	/* Same as above */
 	sizeof(asn1_DEF_Tree_tags)
 		/sizeof(asn1_DEF_Tree_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Tree,
 	2,	/* Elements count */
 	&asn1_DEF_Tree_specs	/* Additional specs */
@@ -229,7 +227,6 @@
 	asn1_DEF_trees_tags,	/* Same as above */
 	sizeof(asn1_DEF_trees_tags)
 		/sizeof(asn1_DEF_trees_tags[0]), /* 2 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_trees,
 	1,	/* Single element */
 	&asn1_DEF_trees_specs	/* Additional specs */
@@ -275,7 +272,6 @@
 	asn1_DEF_anything_member_tags,	/* Same as above */
 	sizeof(asn1_DEF_anything_member_tags)
 		/sizeof(asn1_DEF_anything_member_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_anything_member,
 	1,	/* Elements count */
 	&asn1_DEF_anything_member_specs	/* Additional specs */
@@ -316,7 +312,6 @@
 	asn1_DEF_anything_tags,	/* Same as above */
 	sizeof(asn1_DEF_anything_tags)
 		/sizeof(asn1_DEF_anything_tags[0]), /* 2 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_anything,
 	1,	/* Single element */
 	&asn1_DEF_anything_specs	/* Additional specs */
@@ -373,7 +368,6 @@
 	asn1_DEF_Stuff_tags,	/* Same as above */
 	sizeof(asn1_DEF_Stuff_tags)
 		/sizeof(asn1_DEF_Stuff_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Stuff,
 	2,	/* Elements count */
 	&asn1_DEF_Stuff_specs	/* Additional specs */
diff --git a/tests/32-sequence-of-OK.asn1.-P b/tests/32-sequence-of-OK.asn1.-P
index 5b3d606..e258529 100644
--- a/tests/32-sequence-of-OK.asn1.-P
+++ b/tests/32-sequence-of-OK.asn1.-P
@@ -54,7 +54,6 @@
 	asn1_DEF_Programming_tags,	/* Same as above */
 	sizeof(asn1_DEF_Programming_tags)
 		/sizeof(asn1_DEF_Programming_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Programming,
 	1,	/* Single element */
 	&asn1_DEF_Programming_specs	/* Additional specs */
@@ -116,7 +115,6 @@
 	asn1_DEF_Fault_tags,	/* Same as above */
 	sizeof(asn1_DEF_Fault_tags)
 		/sizeof(asn1_DEF_Fault_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Fault,
 	1,	/* Single element */
 	&asn1_DEF_Fault_specs	/* Additional specs */
@@ -175,7 +173,6 @@
 	asn1_DEF_Error_tags,	/* Same as above */
 	sizeof(asn1_DEF_Error_tags)
 		/sizeof(asn1_DEF_Error_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	0, 0,	/* No members */
 	&asn1_DEF_Error_specs	/* Additional specs */
 };
diff --git a/tests/39-sequence-of-OK.asn1.-P b/tests/39-sequence-of-OK.asn1.-P
index bd13dfd..b8f9f59 100644
--- a/tests/39-sequence-of-OK.asn1.-P
+++ b/tests/39-sequence-of-OK.asn1.-P
@@ -63,7 +63,6 @@
 	asn1_DEF_collection_tags,	/* Same as above */
 	sizeof(asn1_DEF_collection_tags)
 		/sizeof(asn1_DEF_collection_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_collection,
 	1,	/* Single element */
 	&asn1_DEF_collection_specs	/* Additional specs */
@@ -116,7 +115,6 @@
 	asn1_DEF_T_tags,	/* Same as above */
 	sizeof(asn1_DEF_T_tags)
 		/sizeof(asn1_DEF_T_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T,
 	2,	/* Elements count */
 	&asn1_DEF_T_specs	/* Additional specs */
@@ -193,7 +191,6 @@
 	asn1_DEF_T2_tags,	/* Same as above */
 	sizeof(asn1_DEF_T2_tags)
 		/sizeof(asn1_DEF_T2_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T2,
 	2,	/* Elements count */
 	&asn1_DEF_T2_specs	/* Additional specs */
diff --git a/tests/42-real-life-OK.asn1.-PR b/tests/42-real-life-OK.asn1.-PR
index ef05fa5..f26068f 100644
--- a/tests/42-real-life-OK.asn1.-PR
+++ b/tests/42-real-life-OK.asn1.-PR
@@ -99,7 +99,6 @@
 	asn1_DEF_varsets_tags,	/* Same as above */
 	sizeof(asn1_DEF_varsets_tags)
 		/sizeof(asn1_DEF_varsets_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_varsets,
 	1,	/* Single element */
 	&asn1_DEF_varsets_specs	/* Additional specs */
@@ -152,7 +151,6 @@
 	asn1_DEF_LogLine_tags,	/* Same as above */
 	sizeof(asn1_DEF_LogLine_tags)
 		/sizeof(asn1_DEF_LogLine_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_LogLine,
 	2,	/* Elements count */
 	&asn1_DEF_LogLine_specs	/* Additional specs */
@@ -209,8 +207,7 @@
 		/* Nothing is here. See below */
 	}
 	
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 
@@ -250,7 +247,6 @@
 	asn1_DEF_vparts_tags,	/* Same as above */
 	sizeof(asn1_DEF_vparts_tags)
 		/sizeof(asn1_DEF_vparts_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_vparts,
 	1,	/* Single element */
 	&asn1_DEF_vparts_specs	/* Additional specs */
@@ -303,7 +299,6 @@
 	asn1_DEF_VariablePartSet_tags,	/* Same as above */
 	sizeof(asn1_DEF_VariablePartSet_tags)
 		/sizeof(asn1_DEF_VariablePartSet_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_VariablePartSet,
 	2,	/* Elements count */
 	&asn1_DEF_VariablePartSet_specs	/* Additional specs */
@@ -429,7 +424,6 @@
 	asn1_DEF_vset_tags,	/* Same as above */
 	sizeof(asn1_DEF_vset_tags)
 		/sizeof(asn1_DEF_vset_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_vset,
 	1,	/* Single element */
 	&asn1_DEF_vset_specs	/* Additional specs */
@@ -483,7 +477,6 @@
 	asn1_DEF_vrange_tags,	/* Same as above */
 	sizeof(asn1_DEF_vrange_tags)
 		/sizeof(asn1_DEF_vrange_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_vrange,
 	2,	/* Elements count */
 	&asn1_DEF_vrange_specs	/* Additional specs */
@@ -532,7 +525,6 @@
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
 	0,	/* No tags (count) */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_VariablePart,
 	2,	/* Elements count */
 	&asn1_DEF_VariablePart_specs	/* Additional specs */
@@ -626,7 +618,6 @@
 	asn1_DEF_email_tags,	/* Same as above */
 	sizeof(asn1_DEF_email_tags)
 		/sizeof(asn1_DEF_email_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_email,
 	1,	/* Single element */
 	&asn1_DEF_email_specs	/* Additional specs */
@@ -680,7 +671,6 @@
 	asn1_DEF_notify_tags,	/* Same as above */
 	sizeof(asn1_DEF_notify_tags)
 		/sizeof(asn1_DEF_notify_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_notify,
 	2,	/* Elements count */
 	&asn1_DEF_notify_specs	/* Additional specs */
@@ -733,7 +723,6 @@
 	asn1_DEF_ActionItem_tags,	/* Same as above */
 	sizeof(asn1_DEF_ActionItem_tags)
 		/sizeof(asn1_DEF_ActionItem_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_ActionItem,
 	2,	/* Elements count */
 	&asn1_DEF_ActionItem_specs	/* Additional specs */
diff --git a/tests/43-recursion-OK.asn1.-P b/tests/43-recursion-OK.asn1.-P
index 9c5945d..58fd39a 100644
--- a/tests/43-recursion-OK.asn1.-P
+++ b/tests/43-recursion-OK.asn1.-P
@@ -72,7 +72,6 @@
 	asn1_DEF_t_member1_tags,	/* Same as above */
 	sizeof(asn1_DEF_t_member1_tags)
 		/sizeof(asn1_DEF_t_member1_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_t_member1,
 	1,	/* Single element */
 	&asn1_DEF_t_member1_specs	/* Additional specs */
@@ -112,7 +111,6 @@
 	asn1_DEF_t_member2_tags,	/* Same as above */
 	sizeof(asn1_DEF_t_member2_tags)
 		/sizeof(asn1_DEF_t_member2_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_t_member2,
 	1,	/* Single element */
 	&asn1_DEF_t_member2_specs	/* Additional specs */
@@ -181,7 +179,6 @@
 	asn1_DEF_Test_structure_1_tags,	/* Same as above */
 	sizeof(asn1_DEF_Test_structure_1_tags)
 		/sizeof(asn1_DEF_Test_structure_1_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Test_structure_1,
 	4,	/* Elements count */
 	&asn1_DEF_Test_structure_1_specs	/* Additional specs */
@@ -265,7 +262,6 @@
 	asn1_DEF_or_tags,	/* Same as above */
 	sizeof(asn1_DEF_or_tags)
 		/sizeof(asn1_DEF_or_tags[0]), /* 2 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_or,
 	1,	/* Single element */
 	&asn1_DEF_or_specs	/* Additional specs */
@@ -330,7 +326,6 @@
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
 	0,	/* No tags (count) */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Choice_1,
 	4,	/* Elements count */
 	&asn1_DEF_Choice_1_specs	/* Additional specs */
diff --git a/tests/44-choice-in-sequence-OK.asn1.-P b/tests/44-choice-in-sequence-OK.asn1.-P
index 4fcddc4..09b999a 100644
--- a/tests/44-choice-in-sequence-OK.asn1.-P
+++ b/tests/44-choice-in-sequence-OK.asn1.-P
@@ -112,7 +112,6 @@
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
 	0,	/* No tags (count) */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_e,
 	2,	/* Elements count */
 	&asn1_DEF_e_specs	/* Additional specs */
@@ -162,7 +161,6 @@
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
 	0,	/* No tags (count) */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_h,
 	2,	/* Elements count */
 	&asn1_DEF_h_specs	/* Additional specs */
@@ -229,7 +227,6 @@
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
 	0,	/* No tags (count) */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_b,
 	4,	/* Elements count */
 	&asn1_DEF_b_specs	/* Additional specs */
@@ -287,7 +284,6 @@
 	asn1_DEF_T_tags,	/* Same as above */
 	sizeof(asn1_DEF_T_tags)
 		/sizeof(asn1_DEF_T_tags[0]), /* 2 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T,
 	2,	/* Elements count */
 	&asn1_DEF_T_specs	/* Additional specs */
diff --git a/tests/46-redefine-OK.asn1.-PR b/tests/46-redefine-OK.asn1.-PR
index 7463245..4981e22 100644
--- a/tests/46-redefine-OK.asn1.-PR
+++ b/tests/46-redefine-OK.asn1.-PR
@@ -10,107 +10,12 @@
 
 /*** <<< FUNC-DECLS [PrimitiveType] >>> ***/
 
-extern asn1_TYPE_descriptor_t asn1_DEF_PrimitiveType;
-asn_struct_free_f PrimitiveType_free;
-asn_struct_print_f PrimitiveType_print;
-asn_constr_check_f PrimitiveType_constraint;
-ber_type_decoder_f PrimitiveType_decode_ber;
-der_type_encoder_f PrimitiveType_encode_der;
-xer_type_encoder_f PrimitiveType_encode_xer;
+/* This type is equivalent to OCTET_STRING */
+#define	asn1_DEF_PrimitiveType	asn1_DEF_OCTET_STRING
 
 /*** <<< CODE [PrimitiveType] >>> ***/
 
-int
-PrimitiveType_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
-			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
-	td->check_constraints = asn1_DEF_OCTET_STRING.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
-}
-
-/*
- * This type is implemented using OCTET_STRING,
- * so here we adjust the DEF accordingly.
- */
-static void
-PrimitiveType_inherit_TYPE_descriptor(asn1_TYPE_descriptor_t *td) {
-	td->free_struct    = asn1_DEF_OCTET_STRING.free_struct;
-	td->print_struct   = asn1_DEF_OCTET_STRING.print_struct;
-	td->ber_decoder    = asn1_DEF_OCTET_STRING.ber_decoder;
-	td->der_encoder    = asn1_DEF_OCTET_STRING.der_encoder;
-	td->xer_decoder    = asn1_DEF_OCTET_STRING.xer_decoder;
-	td->xer_encoder    = asn1_DEF_OCTET_STRING.xer_encoder;
-	td->last_tag_form  = asn1_DEF_OCTET_STRING.last_tag_form;
-	td->elements       = asn1_DEF_OCTET_STRING.elements;
-	td->elements_count = asn1_DEF_OCTET_STRING.elements_count;
-	td->specifics      = asn1_DEF_OCTET_STRING.specifics;
-}
-
-void
-PrimitiveType_free(asn1_TYPE_descriptor_t *td,
-		void *struct_ptr, int contents_only) {
-	PrimitiveType_inherit_TYPE_descriptor(td);
-	td->free_struct(td, struct_ptr, contents_only);
-}
-
-int
-PrimitiveType_print(asn1_TYPE_descriptor_t *td, const void *struct_ptr,
-		int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
-	PrimitiveType_inherit_TYPE_descriptor(td);
-	return td->print_struct(td, struct_ptr, ilevel, cb, app_key);
-}
-
-ber_dec_rval_t
-PrimitiveType_decode_ber(asn1_TYPE_descriptor_t *td,
-		void **structure, void *bufptr, size_t size, int tag_mode) {
-	PrimitiveType_inherit_TYPE_descriptor(td);
-	return td->ber_decoder(td, structure, bufptr, size, tag_mode);
-}
-
-asn_enc_rval_t
-PrimitiveType_encode_der(asn1_TYPE_descriptor_t *td,
-		void *structure, int tag_mode, ber_tlv_tag_t tag,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	PrimitiveType_inherit_TYPE_descriptor(td);
-	return td->der_encoder(td, structure, tag_mode, tag, cb, app_key);
-}
-
-asn_enc_rval_t
-PrimitiveType_encode_xer(asn1_TYPE_descriptor_t *td, void *structure,
-		int ilevel, enum xer_encoder_flags_e flags,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	PrimitiveType_inherit_TYPE_descriptor(td);
-	return td->xer_encoder(td, structure, ilevel, flags, cb, app_key);
-}
-
-
-/*** <<< STAT-DEFS [PrimitiveType] >>> ***/
-
-static ber_tlv_tag_t asn1_DEF_PrimitiveType_tags[] = {
-	(ASN_TAG_CLASS_UNIVERSAL | (4 << 2))
-};
-asn1_TYPE_descriptor_t asn1_DEF_PrimitiveType = {
-	"PrimitiveType",
-	PrimitiveType_free,
-	PrimitiveType_print,
-	PrimitiveType_constraint,
-	PrimitiveType_decode_ber,
-	PrimitiveType_encode_der,
-	0,				/* Not implemented yet */
-	PrimitiveType_encode_xer,
-	0,	/* Use generic outmost tag fetcher */
-	asn1_DEF_PrimitiveType_tags,
-	sizeof(asn1_DEF_PrimitiveType_tags)
-		/sizeof(asn1_DEF_PrimitiveType_tags[0]), /* 1 */
-	asn1_DEF_PrimitiveType_tags,	/* Same as above */
-	sizeof(asn1_DEF_PrimitiveType_tags)
-		/sizeof(asn1_DEF_PrimitiveType_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
-	0, 0,	/* No members */
-	0	/* No specifics */
-};
+/* This type is equivalent to OCTET_STRING */
 
 
 /*** <<< INCLUDES [ConstructedType] >>> ***/
@@ -173,7 +78,6 @@
 	asn1_DEF_ConstructedType_tags,	/* Same as above */
 	sizeof(asn1_DEF_ConstructedType_tags)
 		/sizeof(asn1_DEF_ConstructedType_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_ConstructedType,
 	1,	/* Elements count */
 	&asn1_DEF_ConstructedType_specs	/* Additional specs */
@@ -204,11 +108,9 @@
 int
 T_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_ConstructedType.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -223,7 +125,6 @@
 	td->der_encoder    = asn1_DEF_ConstructedType.der_encoder;
 	td->xer_decoder    = asn1_DEF_ConstructedType.xer_decoder;
 	td->xer_encoder    = asn1_DEF_ConstructedType.xer_encoder;
-	td->last_tag_form  = asn1_DEF_ConstructedType.last_tag_form;
 	td->elements       = asn1_DEF_ConstructedType.elements;
 	td->elements_count = asn1_DEF_ConstructedType.elements_count;
 	td->specifics      = asn1_DEF_ConstructedType.specifics;
@@ -289,7 +190,6 @@
 	asn1_DEF_T_tags,	/* Same as above */
 	sizeof(asn1_DEF_T_tags)
 		/sizeof(asn1_DEF_T_tags[0]), /* 2 */
-	-0,	/* Unknown yet */
 	0, 0,	/* Defined elsewhere */
 	0	/* No specifics */
 };
diff --git a/tests/47-set-ext-OK.asn1.-P b/tests/47-set-ext-OK.asn1.-P
index bcc364b..0e207d5 100644
--- a/tests/47-set-ext-OK.asn1.-P
+++ b/tests/47-set-ext-OK.asn1.-P
@@ -78,7 +78,6 @@
 	asn1_DEF_T1_tags,	/* Same as above */
 	sizeof(asn1_DEF_T1_tags)
 		/sizeof(asn1_DEF_T1_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T1,
 	1,	/* Elements count */
 	&asn1_DEF_T1_specs	/* Additional specs */
@@ -164,7 +163,6 @@
 	asn1_DEF_T2_tags,	/* Same as above */
 	sizeof(asn1_DEF_T2_tags)
 		/sizeof(asn1_DEF_T2_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T2,
 	1,	/* Elements count */
 	&asn1_DEF_T2_specs	/* Additional specs */
@@ -239,7 +237,6 @@
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
 	0,	/* No tags (count) */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T3,
 	1,	/* Elements count */
 	&asn1_DEF_T3_specs	/* Additional specs */
@@ -314,7 +311,6 @@
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
 	0,	/* No tags (count) */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T4,
 	1,	/* Elements count */
 	&asn1_DEF_T4_specs	/* Additional specs */
diff --git a/tests/50-constraint-OK.asn1.-P b/tests/50-constraint-OK.asn1.-P
index 197474f..6696b56 100644
--- a/tests/50-constraint-OK.asn1.-P
+++ b/tests/50-constraint-OK.asn1.-P
@@ -10,107 +10,12 @@
 
 /*** <<< FUNC-DECLS [Int1] >>> ***/
 
-extern asn1_TYPE_descriptor_t asn1_DEF_Int1;
-asn_struct_free_f Int1_free;
-asn_struct_print_f Int1_print;
-asn_constr_check_f Int1_constraint;
-ber_type_decoder_f Int1_decode_ber;
-der_type_encoder_f Int1_encode_der;
-xer_type_encoder_f Int1_encode_xer;
+/* This type is equivalent to INTEGER */
+#define	asn1_DEF_Int1	asn1_DEF_INTEGER
 
 /*** <<< CODE [Int1] >>> ***/
 
-int
-Int1_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
-			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
-	td->check_constraints = asn1_DEF_INTEGER.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
-}
-
-/*
- * This type is implemented using INTEGER,
- * so here we adjust the DEF accordingly.
- */
-static void
-Int1_inherit_TYPE_descriptor(asn1_TYPE_descriptor_t *td) {
-	td->free_struct    = asn1_DEF_INTEGER.free_struct;
-	td->print_struct   = asn1_DEF_INTEGER.print_struct;
-	td->ber_decoder    = asn1_DEF_INTEGER.ber_decoder;
-	td->der_encoder    = asn1_DEF_INTEGER.der_encoder;
-	td->xer_decoder    = asn1_DEF_INTEGER.xer_decoder;
-	td->xer_encoder    = asn1_DEF_INTEGER.xer_encoder;
-	td->last_tag_form  = asn1_DEF_INTEGER.last_tag_form;
-	td->elements       = asn1_DEF_INTEGER.elements;
-	td->elements_count = asn1_DEF_INTEGER.elements_count;
-	td->specifics      = asn1_DEF_INTEGER.specifics;
-}
-
-void
-Int1_free(asn1_TYPE_descriptor_t *td,
-		void *struct_ptr, int contents_only) {
-	Int1_inherit_TYPE_descriptor(td);
-	td->free_struct(td, struct_ptr, contents_only);
-}
-
-int
-Int1_print(asn1_TYPE_descriptor_t *td, const void *struct_ptr,
-		int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
-	Int1_inherit_TYPE_descriptor(td);
-	return td->print_struct(td, struct_ptr, ilevel, cb, app_key);
-}
-
-ber_dec_rval_t
-Int1_decode_ber(asn1_TYPE_descriptor_t *td,
-		void **structure, void *bufptr, size_t size, int tag_mode) {
-	Int1_inherit_TYPE_descriptor(td);
-	return td->ber_decoder(td, structure, bufptr, size, tag_mode);
-}
-
-asn_enc_rval_t
-Int1_encode_der(asn1_TYPE_descriptor_t *td,
-		void *structure, int tag_mode, ber_tlv_tag_t tag,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	Int1_inherit_TYPE_descriptor(td);
-	return td->der_encoder(td, structure, tag_mode, tag, cb, app_key);
-}
-
-asn_enc_rval_t
-Int1_encode_xer(asn1_TYPE_descriptor_t *td, void *structure,
-		int ilevel, enum xer_encoder_flags_e flags,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	Int1_inherit_TYPE_descriptor(td);
-	return td->xer_encoder(td, structure, ilevel, flags, cb, app_key);
-}
-
-
-/*** <<< STAT-DEFS [Int1] >>> ***/
-
-static ber_tlv_tag_t asn1_DEF_Int1_tags[] = {
-	(ASN_TAG_CLASS_UNIVERSAL | (2 << 2))
-};
-asn1_TYPE_descriptor_t asn1_DEF_Int1 = {
-	"Int1",
-	Int1_free,
-	Int1_print,
-	Int1_constraint,
-	Int1_decode_ber,
-	Int1_encode_der,
-	0,				/* Not implemented yet */
-	Int1_encode_xer,
-	0,	/* Use generic outmost tag fetcher */
-	asn1_DEF_Int1_tags,
-	sizeof(asn1_DEF_Int1_tags)
-		/sizeof(asn1_DEF_Int1_tags[0]), /* 1 */
-	asn1_DEF_Int1_tags,	/* Same as above */
-	sizeof(asn1_DEF_Int1_tags)
-		/sizeof(asn1_DEF_Int1_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
-	0, 0,	/* No members */
-	0	/* No specifics */
-};
+/* This type is equivalent to INTEGER */
 
 
 /*** <<< INCLUDES [Int2] >>> ***/
@@ -137,7 +42,6 @@
 int
 Int2_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Int1_t *st = sptr;
 	long value;
 	
@@ -174,7 +78,6 @@
 	td->der_encoder    = asn1_DEF_Int1.der_encoder;
 	td->xer_decoder    = asn1_DEF_Int1.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Int1.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Int1.last_tag_form;
 	td->elements       = asn1_DEF_Int1.elements;
 	td->elements_count = asn1_DEF_Int1.elements_count;
 	td->specifics      = asn1_DEF_Int1.specifics;
@@ -239,7 +142,6 @@
 	asn1_DEF_Int2_tags,	/* Same as above */
 	sizeof(asn1_DEF_Int2_tags)
 		/sizeof(asn1_DEF_Int2_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -269,7 +171,6 @@
 int
 Int3_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Int2_t *st = sptr;
 	long value;
 	
@@ -310,7 +211,6 @@
 	td->der_encoder    = asn1_DEF_Int2.der_encoder;
 	td->xer_decoder    = asn1_DEF_Int2.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Int2.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Int2.last_tag_form;
 	td->elements       = asn1_DEF_Int2.elements;
 	td->elements_count = asn1_DEF_Int2.elements_count;
 	td->specifics      = asn1_DEF_Int2.specifics;
@@ -375,7 +275,6 @@
 	asn1_DEF_Int3_tags,	/* Same as above */
 	sizeof(asn1_DEF_Int3_tags)
 		/sizeof(asn1_DEF_Int3_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -405,7 +304,6 @@
 int
 Int4_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Int3_t *st = sptr;
 	long value;
 	
@@ -446,7 +344,6 @@
 	td->der_encoder    = asn1_DEF_Int3.der_encoder;
 	td->xer_decoder    = asn1_DEF_Int3.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Int3.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Int3.last_tag_form;
 	td->elements       = asn1_DEF_Int3.elements;
 	td->elements_count = asn1_DEF_Int3.elements_count;
 	td->specifics      = asn1_DEF_Int3.specifics;
@@ -511,7 +408,6 @@
 	asn1_DEF_Int4_tags,	/* Same as above */
 	sizeof(asn1_DEF_Int4_tags)
 		/sizeof(asn1_DEF_Int4_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -541,7 +437,6 @@
 int
 Int5_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Int4_t *st = sptr;
 	long value;
 	
@@ -582,7 +477,6 @@
 	td->der_encoder    = asn1_DEF_Int4.der_encoder;
 	td->xer_decoder    = asn1_DEF_Int4.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Int4.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Int4.last_tag_form;
 	td->elements       = asn1_DEF_Int4.elements;
 	td->elements_count = asn1_DEF_Int4.elements_count;
 	td->specifics      = asn1_DEF_Int4.specifics;
@@ -647,7 +541,6 @@
 	asn1_DEF_Int5_tags,	/* Same as above */
 	sizeof(asn1_DEF_Int5_tags)
 		/sizeof(asn1_DEF_Int5_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -677,7 +570,6 @@
 int
 ExtensibleExtensions_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const INTEGER_t *st = sptr;
 	long value;
 	
@@ -718,7 +610,6 @@
 	td->der_encoder    = asn1_DEF_INTEGER.der_encoder;
 	td->xer_decoder    = asn1_DEF_INTEGER.xer_decoder;
 	td->xer_encoder    = asn1_DEF_INTEGER.xer_encoder;
-	td->last_tag_form  = asn1_DEF_INTEGER.last_tag_form;
 	td->elements       = asn1_DEF_INTEGER.elements;
 	td->elements_count = asn1_DEF_INTEGER.elements_count;
 	td->specifics      = asn1_DEF_INTEGER.specifics;
@@ -783,7 +674,6 @@
 	asn1_DEF_ExtensibleExtensions_tags,	/* Same as above */
 	sizeof(asn1_DEF_ExtensibleExtensions_tags)
 		/sizeof(asn1_DEF_ExtensibleExtensions_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -800,107 +690,12 @@
 
 /*** <<< FUNC-DECLS [Str1] >>> ***/
 
-extern asn1_TYPE_descriptor_t asn1_DEF_Str1;
-asn_struct_free_f Str1_free;
-asn_struct_print_f Str1_print;
-asn_constr_check_f Str1_constraint;
-ber_type_decoder_f Str1_decode_ber;
-der_type_encoder_f Str1_encode_der;
-xer_type_encoder_f Str1_encode_xer;
+/* This type is equivalent to IA5String */
+#define	asn1_DEF_Str1	asn1_DEF_IA5String
 
 /*** <<< CODE [Str1] >>> ***/
 
-int
-Str1_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
-			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
-	td->check_constraints = asn1_DEF_IA5String.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
-}
-
-/*
- * This type is implemented using IA5String,
- * so here we adjust the DEF accordingly.
- */
-static void
-Str1_inherit_TYPE_descriptor(asn1_TYPE_descriptor_t *td) {
-	td->free_struct    = asn1_DEF_IA5String.free_struct;
-	td->print_struct   = asn1_DEF_IA5String.print_struct;
-	td->ber_decoder    = asn1_DEF_IA5String.ber_decoder;
-	td->der_encoder    = asn1_DEF_IA5String.der_encoder;
-	td->xer_decoder    = asn1_DEF_IA5String.xer_decoder;
-	td->xer_encoder    = asn1_DEF_IA5String.xer_encoder;
-	td->last_tag_form  = asn1_DEF_IA5String.last_tag_form;
-	td->elements       = asn1_DEF_IA5String.elements;
-	td->elements_count = asn1_DEF_IA5String.elements_count;
-	td->specifics      = asn1_DEF_IA5String.specifics;
-}
-
-void
-Str1_free(asn1_TYPE_descriptor_t *td,
-		void *struct_ptr, int contents_only) {
-	Str1_inherit_TYPE_descriptor(td);
-	td->free_struct(td, struct_ptr, contents_only);
-}
-
-int
-Str1_print(asn1_TYPE_descriptor_t *td, const void *struct_ptr,
-		int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
-	Str1_inherit_TYPE_descriptor(td);
-	return td->print_struct(td, struct_ptr, ilevel, cb, app_key);
-}
-
-ber_dec_rval_t
-Str1_decode_ber(asn1_TYPE_descriptor_t *td,
-		void **structure, void *bufptr, size_t size, int tag_mode) {
-	Str1_inherit_TYPE_descriptor(td);
-	return td->ber_decoder(td, structure, bufptr, size, tag_mode);
-}
-
-asn_enc_rval_t
-Str1_encode_der(asn1_TYPE_descriptor_t *td,
-		void *structure, int tag_mode, ber_tlv_tag_t tag,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	Str1_inherit_TYPE_descriptor(td);
-	return td->der_encoder(td, structure, tag_mode, tag, cb, app_key);
-}
-
-asn_enc_rval_t
-Str1_encode_xer(asn1_TYPE_descriptor_t *td, void *structure,
-		int ilevel, enum xer_encoder_flags_e flags,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	Str1_inherit_TYPE_descriptor(td);
-	return td->xer_encoder(td, structure, ilevel, flags, cb, app_key);
-}
-
-
-/*** <<< STAT-DEFS [Str1] >>> ***/
-
-static ber_tlv_tag_t asn1_DEF_Str1_tags[] = {
-	(ASN_TAG_CLASS_UNIVERSAL | (22 << 2))
-};
-asn1_TYPE_descriptor_t asn1_DEF_Str1 = {
-	"Str1",
-	Str1_free,
-	Str1_print,
-	Str1_constraint,
-	Str1_decode_ber,
-	Str1_encode_der,
-	0,				/* Not implemented yet */
-	Str1_encode_xer,
-	0,	/* Use generic outmost tag fetcher */
-	asn1_DEF_Str1_tags,
-	sizeof(asn1_DEF_Str1_tags)
-		/sizeof(asn1_DEF_Str1_tags[0]), /* 1 */
-	asn1_DEF_Str1_tags,	/* Same as above */
-	sizeof(asn1_DEF_Str1_tags)
-		/sizeof(asn1_DEF_Str1_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
-	0, 0,	/* No members */
-	0	/* No specifics */
-};
+/* This type is equivalent to IA5String */
 
 
 /*** <<< INCLUDES [Str2] >>> ***/
@@ -943,7 +738,6 @@
 int
 Str2_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Str1_t *st = sptr;
 	size_t size;
 	
@@ -980,7 +774,6 @@
 	td->der_encoder    = asn1_DEF_Str1.der_encoder;
 	td->xer_decoder    = asn1_DEF_Str1.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Str1.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Str1.last_tag_form;
 	td->elements       = asn1_DEF_Str1.elements;
 	td->elements_count = asn1_DEF_Str1.elements_count;
 	td->specifics      = asn1_DEF_Str1.specifics;
@@ -1045,7 +838,6 @@
 	asn1_DEF_Str2_tags,	/* Same as above */
 	sizeof(asn1_DEF_Str2_tags)
 		/sizeof(asn1_DEF_Str2_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -1102,7 +894,6 @@
 int
 Str3_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Str2_t *st = sptr;
 	size_t size;
 	
@@ -1139,7 +930,6 @@
 	td->der_encoder    = asn1_DEF_Str2.der_encoder;
 	td->xer_decoder    = asn1_DEF_Str2.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Str2.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Str2.last_tag_form;
 	td->elements       = asn1_DEF_Str2.elements;
 	td->elements_count = asn1_DEF_Str2.elements_count;
 	td->specifics      = asn1_DEF_Str2.specifics;
@@ -1204,7 +994,6 @@
 	asn1_DEF_Str3_tags,	/* Same as above */
 	sizeof(asn1_DEF_Str3_tags)
 		/sizeof(asn1_DEF_Str3_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -1250,7 +1039,6 @@
 int
 Str4_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const IA5String_t *st = sptr;
 	
 	if(!sptr) {
@@ -1284,7 +1072,6 @@
 	td->der_encoder    = asn1_DEF_IA5String.der_encoder;
 	td->xer_decoder    = asn1_DEF_IA5String.xer_decoder;
 	td->xer_encoder    = asn1_DEF_IA5String.xer_encoder;
-	td->last_tag_form  = asn1_DEF_IA5String.last_tag_form;
 	td->elements       = asn1_DEF_IA5String.elements;
 	td->elements_count = asn1_DEF_IA5String.elements_count;
 	td->specifics      = asn1_DEF_IA5String.specifics;
@@ -1349,7 +1136,6 @@
 	asn1_DEF_Str4_tags,	/* Same as above */
 	sizeof(asn1_DEF_Str4_tags)
 		/sizeof(asn1_DEF_Str4_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -1395,7 +1181,6 @@
 int
 PER_Visible_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const IA5String_t *st = sptr;
 	
 	if(!sptr) {
@@ -1429,7 +1214,6 @@
 	td->der_encoder    = asn1_DEF_IA5String.der_encoder;
 	td->xer_decoder    = asn1_DEF_IA5String.xer_decoder;
 	td->xer_encoder    = asn1_DEF_IA5String.xer_encoder;
-	td->last_tag_form  = asn1_DEF_IA5String.last_tag_form;
 	td->elements       = asn1_DEF_IA5String.elements;
 	td->elements_count = asn1_DEF_IA5String.elements_count;
 	td->specifics      = asn1_DEF_IA5String.specifics;
@@ -1494,7 +1278,6 @@
 	asn1_DEF_PER_Visible_tags,	/* Same as above */
 	sizeof(asn1_DEF_PER_Visible_tags)
 		/sizeof(asn1_DEF_PER_Visible_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -1540,7 +1323,6 @@
 int
 PER_Visible_2_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const PER_Visible_t *st = sptr;
 	
 	if(!sptr) {
@@ -1574,7 +1356,6 @@
 	td->der_encoder    = asn1_DEF_PER_Visible.der_encoder;
 	td->xer_decoder    = asn1_DEF_PER_Visible.xer_decoder;
 	td->xer_encoder    = asn1_DEF_PER_Visible.xer_encoder;
-	td->last_tag_form  = asn1_DEF_PER_Visible.last_tag_form;
 	td->elements       = asn1_DEF_PER_Visible.elements;
 	td->elements_count = asn1_DEF_PER_Visible.elements_count;
 	td->specifics      = asn1_DEF_PER_Visible.specifics;
@@ -1639,7 +1420,6 @@
 	asn1_DEF_PER_Visible_2_tags,	/* Same as above */
 	sizeof(asn1_DEF_PER_Visible_2_tags)
 		/sizeof(asn1_DEF_PER_Visible_2_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -1685,7 +1465,6 @@
 int
 Not_PER_Visible_1_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const PER_Visible_t *st = sptr;
 	
 	if(!sptr) {
@@ -1719,7 +1498,6 @@
 	td->der_encoder    = asn1_DEF_PER_Visible.der_encoder;
 	td->xer_decoder    = asn1_DEF_PER_Visible.xer_decoder;
 	td->xer_encoder    = asn1_DEF_PER_Visible.xer_encoder;
-	td->last_tag_form  = asn1_DEF_PER_Visible.last_tag_form;
 	td->elements       = asn1_DEF_PER_Visible.elements;
 	td->elements_count = asn1_DEF_PER_Visible.elements_count;
 	td->specifics      = asn1_DEF_PER_Visible.specifics;
@@ -1784,7 +1562,6 @@
 	asn1_DEF_Not_PER_Visible_1_tags,	/* Same as above */
 	sizeof(asn1_DEF_Not_PER_Visible_1_tags)
 		/sizeof(asn1_DEF_Not_PER_Visible_1_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -1830,7 +1607,6 @@
 int
 Not_PER_Visible_2_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const PER_Visible_t *st = sptr;
 	
 	if(!sptr) {
@@ -1864,7 +1640,6 @@
 	td->der_encoder    = asn1_DEF_PER_Visible.der_encoder;
 	td->xer_decoder    = asn1_DEF_PER_Visible.xer_decoder;
 	td->xer_encoder    = asn1_DEF_PER_Visible.xer_encoder;
-	td->last_tag_form  = asn1_DEF_PER_Visible.last_tag_form;
 	td->elements       = asn1_DEF_PER_Visible.elements;
 	td->elements_count = asn1_DEF_PER_Visible.elements_count;
 	td->specifics      = asn1_DEF_PER_Visible.specifics;
@@ -1929,7 +1704,6 @@
 	asn1_DEF_Not_PER_Visible_2_tags,	/* Same as above */
 	sizeof(asn1_DEF_Not_PER_Visible_2_tags)
 		/sizeof(asn1_DEF_Not_PER_Visible_2_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -1975,7 +1749,6 @@
 int
 Not_PER_Visible_3_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const PER_Visible_t *st = sptr;
 	
 	if(!sptr) {
@@ -2009,7 +1782,6 @@
 	td->der_encoder    = asn1_DEF_PER_Visible.der_encoder;
 	td->xer_decoder    = asn1_DEF_PER_Visible.xer_decoder;
 	td->xer_encoder    = asn1_DEF_PER_Visible.xer_encoder;
-	td->last_tag_form  = asn1_DEF_PER_Visible.last_tag_form;
 	td->elements       = asn1_DEF_PER_Visible.elements;
 	td->elements_count = asn1_DEF_PER_Visible.elements_count;
 	td->specifics      = asn1_DEF_PER_Visible.specifics;
@@ -2074,7 +1846,6 @@
 	asn1_DEF_Not_PER_Visible_3_tags,	/* Same as above */
 	sizeof(asn1_DEF_Not_PER_Visible_3_tags)
 		/sizeof(asn1_DEF_Not_PER_Visible_3_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -2120,7 +1891,6 @@
 int
 SIZE_but_not_FROM_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const PER_Visible_t *st = sptr;
 	size_t size;
 	
@@ -2157,7 +1927,6 @@
 	td->der_encoder    = asn1_DEF_PER_Visible.der_encoder;
 	td->xer_decoder    = asn1_DEF_PER_Visible.xer_decoder;
 	td->xer_encoder    = asn1_DEF_PER_Visible.xer_encoder;
-	td->last_tag_form  = asn1_DEF_PER_Visible.last_tag_form;
 	td->elements       = asn1_DEF_PER_Visible.elements;
 	td->elements_count = asn1_DEF_PER_Visible.elements_count;
 	td->specifics      = asn1_DEF_PER_Visible.specifics;
@@ -2222,7 +1991,6 @@
 	asn1_DEF_SIZE_but_not_FROM_tags,	/* Same as above */
 	sizeof(asn1_DEF_SIZE_but_not_FROM_tags)
 		/sizeof(asn1_DEF_SIZE_but_not_FROM_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -2268,7 +2036,6 @@
 int
 SIZE_and_FROM_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const PER_Visible_t *st = sptr;
 	size_t size;
 	
@@ -2305,7 +2072,6 @@
 	td->der_encoder    = asn1_DEF_PER_Visible.der_encoder;
 	td->xer_decoder    = asn1_DEF_PER_Visible.xer_decoder;
 	td->xer_encoder    = asn1_DEF_PER_Visible.xer_encoder;
-	td->last_tag_form  = asn1_DEF_PER_Visible.last_tag_form;
 	td->elements       = asn1_DEF_PER_Visible.elements;
 	td->elements_count = asn1_DEF_PER_Visible.elements_count;
 	td->specifics      = asn1_DEF_PER_Visible.specifics;
@@ -2370,7 +2136,6 @@
 	asn1_DEF_SIZE_and_FROM_tags,	/* Same as above */
 	sizeof(asn1_DEF_SIZE_and_FROM_tags)
 		/sizeof(asn1_DEF_SIZE_and_FROM_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -2416,7 +2181,6 @@
 int
 Neither_SIZE_nor_FROM_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const PER_Visible_t *st = sptr;
 	
 	if(!sptr) {
@@ -2450,7 +2214,6 @@
 	td->der_encoder    = asn1_DEF_PER_Visible.der_encoder;
 	td->xer_decoder    = asn1_DEF_PER_Visible.xer_decoder;
 	td->xer_encoder    = asn1_DEF_PER_Visible.xer_encoder;
-	td->last_tag_form  = asn1_DEF_PER_Visible.last_tag_form;
 	td->elements       = asn1_DEF_PER_Visible.elements;
 	td->elements_count = asn1_DEF_PER_Visible.elements_count;
 	td->specifics      = asn1_DEF_PER_Visible.specifics;
@@ -2515,7 +2278,6 @@
 	asn1_DEF_Neither_SIZE_nor_FROM_tags,	/* Same as above */
 	sizeof(asn1_DEF_Neither_SIZE_nor_FROM_tags)
 		/sizeof(asn1_DEF_Neither_SIZE_nor_FROM_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -2574,7 +2336,6 @@
 int
 Utf8_3_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Utf8_2_t *st = sptr;
 	size_t size;
 	
@@ -2612,7 +2373,6 @@
 	td->der_encoder    = asn1_DEF_Utf8_2.der_encoder;
 	td->xer_decoder    = asn1_DEF_Utf8_2.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Utf8_2.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Utf8_2.last_tag_form;
 	td->elements       = asn1_DEF_Utf8_2.elements;
 	td->elements_count = asn1_DEF_Utf8_2.elements_count;
 	td->specifics      = asn1_DEF_Utf8_2.specifics;
@@ -2677,7 +2437,6 @@
 	asn1_DEF_Utf8_3_tags,	/* Same as above */
 	sizeof(asn1_DEF_Utf8_3_tags)
 		/sizeof(asn1_DEF_Utf8_3_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -2707,7 +2466,6 @@
 int
 Utf8_2_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
 	const Utf8_1_t *st = sptr;
 	size_t size;
 	
@@ -2744,7 +2502,6 @@
 	td->der_encoder    = asn1_DEF_Utf8_1.der_encoder;
 	td->xer_decoder    = asn1_DEF_Utf8_1.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Utf8_1.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Utf8_1.last_tag_form;
 	td->elements       = asn1_DEF_Utf8_1.elements;
 	td->elements_count = asn1_DEF_Utf8_1.elements_count;
 	td->specifics      = asn1_DEF_Utf8_1.specifics;
@@ -2809,7 +2566,6 @@
 	asn1_DEF_Utf8_2_tags,	/* Same as above */
 	sizeof(asn1_DEF_Utf8_2_tags)
 		/sizeof(asn1_DEF_Utf8_2_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -2826,107 +2582,12 @@
 
 /*** <<< FUNC-DECLS [Utf8-1] >>> ***/
 
-extern asn1_TYPE_descriptor_t asn1_DEF_Utf8_1;
-asn_struct_free_f Utf8_1_free;
-asn_struct_print_f Utf8_1_print;
-asn_constr_check_f Utf8_1_constraint;
-ber_type_decoder_f Utf8_1_decode_ber;
-der_type_encoder_f Utf8_1_encode_der;
-xer_type_encoder_f Utf8_1_encode_xer;
+/* This type is equivalent to UTF8String */
+#define	asn1_DEF_Utf8_1	asn1_DEF_UTF8String
 
 /*** <<< CODE [Utf8-1] >>> ***/
 
-int
-Utf8_1_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
-			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
-	td->check_constraints = asn1_DEF_UTF8String.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
-}
-
-/*
- * This type is implemented using UTF8String,
- * so here we adjust the DEF accordingly.
- */
-static void
-Utf8_1_inherit_TYPE_descriptor(asn1_TYPE_descriptor_t *td) {
-	td->free_struct    = asn1_DEF_UTF8String.free_struct;
-	td->print_struct   = asn1_DEF_UTF8String.print_struct;
-	td->ber_decoder    = asn1_DEF_UTF8String.ber_decoder;
-	td->der_encoder    = asn1_DEF_UTF8String.der_encoder;
-	td->xer_decoder    = asn1_DEF_UTF8String.xer_decoder;
-	td->xer_encoder    = asn1_DEF_UTF8String.xer_encoder;
-	td->last_tag_form  = asn1_DEF_UTF8String.last_tag_form;
-	td->elements       = asn1_DEF_UTF8String.elements;
-	td->elements_count = asn1_DEF_UTF8String.elements_count;
-	td->specifics      = asn1_DEF_UTF8String.specifics;
-}
-
-void
-Utf8_1_free(asn1_TYPE_descriptor_t *td,
-		void *struct_ptr, int contents_only) {
-	Utf8_1_inherit_TYPE_descriptor(td);
-	td->free_struct(td, struct_ptr, contents_only);
-}
-
-int
-Utf8_1_print(asn1_TYPE_descriptor_t *td, const void *struct_ptr,
-		int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
-	Utf8_1_inherit_TYPE_descriptor(td);
-	return td->print_struct(td, struct_ptr, ilevel, cb, app_key);
-}
-
-ber_dec_rval_t
-Utf8_1_decode_ber(asn1_TYPE_descriptor_t *td,
-		void **structure, void *bufptr, size_t size, int tag_mode) {
-	Utf8_1_inherit_TYPE_descriptor(td);
-	return td->ber_decoder(td, structure, bufptr, size, tag_mode);
-}
-
-asn_enc_rval_t
-Utf8_1_encode_der(asn1_TYPE_descriptor_t *td,
-		void *structure, int tag_mode, ber_tlv_tag_t tag,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	Utf8_1_inherit_TYPE_descriptor(td);
-	return td->der_encoder(td, structure, tag_mode, tag, cb, app_key);
-}
-
-asn_enc_rval_t
-Utf8_1_encode_xer(asn1_TYPE_descriptor_t *td, void *structure,
-		int ilevel, enum xer_encoder_flags_e flags,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	Utf8_1_inherit_TYPE_descriptor(td);
-	return td->xer_encoder(td, structure, ilevel, flags, cb, app_key);
-}
-
-
-/*** <<< STAT-DEFS [Utf8-1] >>> ***/
-
-static ber_tlv_tag_t asn1_DEF_Utf8_1_tags[] = {
-	(ASN_TAG_CLASS_UNIVERSAL | (12 << 2))
-};
-asn1_TYPE_descriptor_t asn1_DEF_Utf8_1 = {
-	"Utf8-1",
-	Utf8_1_free,
-	Utf8_1_print,
-	Utf8_1_constraint,
-	Utf8_1_decode_ber,
-	Utf8_1_encode_der,
-	0,				/* Not implemented yet */
-	Utf8_1_encode_xer,
-	0,	/* Use generic outmost tag fetcher */
-	asn1_DEF_Utf8_1_tags,
-	sizeof(asn1_DEF_Utf8_1_tags)
-		/sizeof(asn1_DEF_Utf8_1_tags[0]), /* 1 */
-	asn1_DEF_Utf8_1_tags,	/* Same as above */
-	sizeof(asn1_DEF_Utf8_1_tags)
-		/sizeof(asn1_DEF_Utf8_1_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
-	0, 0,	/* No members */
-	0	/* No specifics */
-};
+/* This type is equivalent to UTF8String */
 
 
 /*** <<< INCLUDES [VisibleIdentifier] >>> ***/
@@ -2940,15 +2601,34 @@
 
 /*** <<< FUNC-DECLS [VisibleIdentifier] >>> ***/
 
-extern asn1_TYPE_descriptor_t asn1_DEF_VisibleIdentifier;
-asn_struct_free_f VisibleIdentifier_free;
-asn_struct_print_f VisibleIdentifier_print;
-asn_constr_check_f VisibleIdentifier_constraint;
-ber_type_decoder_f VisibleIdentifier_decode_ber;
-der_type_encoder_f VisibleIdentifier_encode_der;
-xer_type_encoder_f VisibleIdentifier_encode_xer;
+/* This type is equivalent to Identifier */
+#define	asn1_DEF_VisibleIdentifier	asn1_DEF_Identifier
 
-/*** <<< CTABLES [VisibleIdentifier] >>> ***/
+/*** <<< CODE [VisibleIdentifier] >>> ***/
+
+/* This type is equivalent to Identifier */
+
+
+/*** <<< INCLUDES [Identifier] >>> ***/
+
+#include <VisibleString.h>
+
+/*** <<< TYPE-DECLS [Identifier] >>> ***/
+
+
+typedef VisibleString_t	 Identifier_t;
+
+/*** <<< FUNC-DECLS [Identifier] >>> ***/
+
+extern asn1_TYPE_descriptor_t asn1_DEF_Identifier;
+asn_struct_free_f Identifier_free;
+asn_struct_print_f Identifier_print;
+asn_constr_check_f Identifier_constraint;
+ber_type_decoder_f Identifier_decode_ber;
+der_type_encoder_f Identifier_encode_der;
+xer_type_encoder_f Identifier_encode_xer;
+
+/*** <<< CTABLES [Identifier] >>> ***/
 
 static int permitted_alphabet_table_14[256] = {
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,	/*                  */
@@ -2976,13 +2656,12 @@
 }
 
 
-/*** <<< CODE [VisibleIdentifier] >>> ***/
+/*** <<< CODE [Identifier] >>> ***/
 
 int
-VisibleIdentifier_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
+Identifier_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	const Identifier_t *st = sptr;
+	const VisibleString_t *st = sptr;
 	size_t size;
 	
 	if(!sptr) {
@@ -3007,166 +2686,6 @@
 }
 
 /*
- * This type is implemented using Identifier,
- * so here we adjust the DEF accordingly.
- */
-static void
-VisibleIdentifier_inherit_TYPE_descriptor(asn1_TYPE_descriptor_t *td) {
-	td->free_struct    = asn1_DEF_Identifier.free_struct;
-	td->print_struct   = asn1_DEF_Identifier.print_struct;
-	td->ber_decoder    = asn1_DEF_Identifier.ber_decoder;
-	td->der_encoder    = asn1_DEF_Identifier.der_encoder;
-	td->xer_decoder    = asn1_DEF_Identifier.xer_decoder;
-	td->xer_encoder    = asn1_DEF_Identifier.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Identifier.last_tag_form;
-	td->elements       = asn1_DEF_Identifier.elements;
-	td->elements_count = asn1_DEF_Identifier.elements_count;
-	td->specifics      = asn1_DEF_Identifier.specifics;
-}
-
-void
-VisibleIdentifier_free(asn1_TYPE_descriptor_t *td,
-		void *struct_ptr, int contents_only) {
-	VisibleIdentifier_inherit_TYPE_descriptor(td);
-	td->free_struct(td, struct_ptr, contents_only);
-}
-
-int
-VisibleIdentifier_print(asn1_TYPE_descriptor_t *td, const void *struct_ptr,
-		int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
-	VisibleIdentifier_inherit_TYPE_descriptor(td);
-	return td->print_struct(td, struct_ptr, ilevel, cb, app_key);
-}
-
-ber_dec_rval_t
-VisibleIdentifier_decode_ber(asn1_TYPE_descriptor_t *td,
-		void **structure, void *bufptr, size_t size, int tag_mode) {
-	VisibleIdentifier_inherit_TYPE_descriptor(td);
-	return td->ber_decoder(td, structure, bufptr, size, tag_mode);
-}
-
-asn_enc_rval_t
-VisibleIdentifier_encode_der(asn1_TYPE_descriptor_t *td,
-		void *structure, int tag_mode, ber_tlv_tag_t tag,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	VisibleIdentifier_inherit_TYPE_descriptor(td);
-	return td->der_encoder(td, structure, tag_mode, tag, cb, app_key);
-}
-
-asn_enc_rval_t
-VisibleIdentifier_encode_xer(asn1_TYPE_descriptor_t *td, void *structure,
-		int ilevel, enum xer_encoder_flags_e flags,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	VisibleIdentifier_inherit_TYPE_descriptor(td);
-	return td->xer_encoder(td, structure, ilevel, flags, cb, app_key);
-}
-
-
-/*** <<< STAT-DEFS [VisibleIdentifier] >>> ***/
-
-static ber_tlv_tag_t asn1_DEF_VisibleIdentifier_tags[] = {
-	(ASN_TAG_CLASS_UNIVERSAL | (26 << 2))
-};
-asn1_TYPE_descriptor_t asn1_DEF_VisibleIdentifier = {
-	"VisibleIdentifier",
-	VisibleIdentifier_free,
-	VisibleIdentifier_print,
-	VisibleIdentifier_constraint,
-	VisibleIdentifier_decode_ber,
-	VisibleIdentifier_encode_der,
-	0,				/* Not implemented yet */
-	VisibleIdentifier_encode_xer,
-	0,	/* Use generic outmost tag fetcher */
-	asn1_DEF_VisibleIdentifier_tags,
-	sizeof(asn1_DEF_VisibleIdentifier_tags)
-		/sizeof(asn1_DEF_VisibleIdentifier_tags[0]), /* 1 */
-	asn1_DEF_VisibleIdentifier_tags,	/* Same as above */
-	sizeof(asn1_DEF_VisibleIdentifier_tags)
-		/sizeof(asn1_DEF_VisibleIdentifier_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
-	0, 0,	/* No members */
-	0	/* No specifics */
-};
-
-
-/*** <<< INCLUDES [Identifier] >>> ***/
-
-#include <VisibleString.h>
-
-/*** <<< TYPE-DECLS [Identifier] >>> ***/
-
-
-typedef VisibleString_t	 Identifier_t;
-
-/*** <<< FUNC-DECLS [Identifier] >>> ***/
-
-extern asn1_TYPE_descriptor_t asn1_DEF_Identifier;
-asn_struct_free_f Identifier_free;
-asn_struct_print_f Identifier_print;
-asn_constr_check_f Identifier_constraint;
-ber_type_decoder_f Identifier_decode_ber;
-der_type_encoder_f Identifier_encode_der;
-xer_type_encoder_f Identifier_encode_xer;
-
-/*** <<< CTABLES [Identifier] >>> ***/
-
-static int permitted_alphabet_table_15[256] = {
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,	/*                  */
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,	/*                  */
-0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,	/*     $            */
-1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,	/* 0123456789       */
-0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,	/*  ABCDEFGHIJKLMNO */
-1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1,	/* PQRSTUVWXYZ    _ */
-0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,	/*  abcdefghijklmno */
-1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,	/* pqrstuvwxyz      */
-};
-
-static int check_permitted_alphabet_15(const void *sptr) {
-	int *table = permitted_alphabet_table_15;
-	/* The underlying type is VisibleString */
-	const VisibleString_t *st = sptr;
-	const uint8_t *ch = st->buf;
-	const uint8_t *end = ch + st->size;
-	
-	for(; ch < end; ch++) {
-		uint8_t cv = *ch;
-		if(!table[cv]) return -1;
-	}
-	return 0;
-}
-
-
-/*** <<< CODE [Identifier] >>> ***/
-
-int
-Identifier_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
-			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	const VisibleString_t *st = sptr;
-	size_t size;
-	
-	if(!sptr) {
-		_ASN_ERRLOG(app_errlog, app_key,
-			"%s: value not given (%s:%d)",
-			td->name, __FILE__, __LINE__);
-		return -1;
-	}
-	
-	size = st->size;
-	
-	if((size >= 1 && size <= 32)
-		 && !check_permitted_alphabet_15(sptr)) {
-		/* Constraint check succeeded */
-		return 0;
-	} else {
-		_ASN_ERRLOG(app_errlog, app_key,
-			"%s: constraint failed (%s:%d)",
-			td->name, __FILE__, __LINE__);
-		return -1;
-	}
-}
-
-/*
  * This type is implemented using VisibleString,
  * so here we adjust the DEF accordingly.
  */
@@ -3178,7 +2697,6 @@
 	td->der_encoder    = asn1_DEF_VisibleString.der_encoder;
 	td->xer_decoder    = asn1_DEF_VisibleString.xer_decoder;
 	td->xer_encoder    = asn1_DEF_VisibleString.xer_encoder;
-	td->last_tag_form  = asn1_DEF_VisibleString.last_tag_form;
 	td->elements       = asn1_DEF_VisibleString.elements;
 	td->elements_count = asn1_DEF_VisibleString.elements_count;
 	td->specifics      = asn1_DEF_VisibleString.specifics;
@@ -3243,7 +2761,6 @@
 	asn1_DEF_Identifier_tags,	/* Same as above */
 	sizeof(asn1_DEF_Identifier_tags)
 		/sizeof(asn1_DEF_Identifier_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
diff --git a/tests/60-any-OK.asn1.-P b/tests/60-any-OK.asn1.-P
index 2da68af..ded466b 100644
--- a/tests/60-any-OK.asn1.-P
+++ b/tests/60-any-OK.asn1.-P
@@ -68,7 +68,6 @@
 	asn1_DEF_T1_tags,	/* Same as above */
 	sizeof(asn1_DEF_T1_tags)
 		/sizeof(asn1_DEF_T1_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T1,
 	2,	/* Elements count */
 	&asn1_DEF_T1_specs	/* Additional specs */
@@ -145,7 +144,6 @@
 	asn1_DEF_T2_tags,	/* Same as above */
 	sizeof(asn1_DEF_T2_tags)
 		/sizeof(asn1_DEF_T2_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T2,
 	2,	/* Elements count */
 	&asn1_DEF_T2_specs	/* Additional specs */
diff --git a/tests/65-multi-tag-OK.asn1.-P b/tests/65-multi-tag-OK.asn1.-P
index 111c276..150fb21 100644
--- a/tests/65-multi-tag-OK.asn1.-P
+++ b/tests/65-multi-tag-OK.asn1.-P
@@ -23,11 +23,9 @@
 int
 T1_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T2.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -42,7 +40,6 @@
 	td->der_encoder    = asn1_DEF_T2.der_encoder;
 	td->xer_decoder    = asn1_DEF_T2.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T2.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T2.last_tag_form;
 	td->elements       = asn1_DEF_T2.elements;
 	td->elements_count = asn1_DEF_T2.elements_count;
 	td->specifics      = asn1_DEF_T2.specifics;
@@ -118,7 +115,6 @@
 	asn1_DEF_T1_all_tags,
 	sizeof(asn1_DEF_T1_all_tags)
 		/sizeof(asn1_DEF_T1_all_tags[0]), /* 6 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -148,11 +144,9 @@
 int
 T2_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T3.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -167,7 +161,6 @@
 	td->der_encoder    = asn1_DEF_T3.der_encoder;
 	td->xer_decoder    = asn1_DEF_T3.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T3.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T3.last_tag_form;
 	td->elements       = asn1_DEF_T3.elements;
 	td->elements_count = asn1_DEF_T3.elements_count;
 	td->specifics      = asn1_DEF_T3.specifics;
@@ -241,7 +234,6 @@
 	asn1_DEF_T2_all_tags,
 	sizeof(asn1_DEF_T2_all_tags)
 		/sizeof(asn1_DEF_T2_all_tags[0]), /* 5 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -271,11 +263,9 @@
 int
 T3_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T4.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -290,7 +280,6 @@
 	td->der_encoder    = asn1_DEF_T4.der_encoder;
 	td->xer_decoder    = asn1_DEF_T4.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T4.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T4.last_tag_form;
 	td->elements       = asn1_DEF_T4.elements;
 	td->elements_count = asn1_DEF_T4.elements_count;
 	td->specifics      = asn1_DEF_T4.specifics;
@@ -362,7 +351,6 @@
 	asn1_DEF_T3_all_tags,
 	sizeof(asn1_DEF_T3_all_tags)
 		/sizeof(asn1_DEF_T3_all_tags[0]), /* 4 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -392,11 +380,9 @@
 int
 T4_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T5.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -411,7 +397,6 @@
 	td->der_encoder    = asn1_DEF_T5.der_encoder;
 	td->xer_decoder    = asn1_DEF_T5.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T5.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T5.last_tag_form;
 	td->elements       = asn1_DEF_T5.elements;
 	td->elements_count = asn1_DEF_T5.elements_count;
 	td->specifics      = asn1_DEF_T5.specifics;
@@ -478,7 +463,6 @@
 	asn1_DEF_T4_tags,	/* Same as above */
 	sizeof(asn1_DEF_T4_tags)
 		/sizeof(asn1_DEF_T4_tags[0]), /* 3 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -508,11 +492,9 @@
 int
 T5_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T6.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -527,7 +509,6 @@
 	td->der_encoder    = asn1_DEF_T6.der_encoder;
 	td->xer_decoder    = asn1_DEF_T6.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T6.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T6.last_tag_form;
 	td->elements       = asn1_DEF_T6.elements;
 	td->elements_count = asn1_DEF_T6.elements_count;
 	td->specifics      = asn1_DEF_T6.specifics;
@@ -593,7 +574,6 @@
 	asn1_DEF_T5_tags,	/* Same as above */
 	sizeof(asn1_DEF_T5_tags)
 		/sizeof(asn1_DEF_T5_tags[0]), /* 2 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -610,107 +590,12 @@
 
 /*** <<< FUNC-DECLS [T6] >>> ***/
 
-extern asn1_TYPE_descriptor_t asn1_DEF_T6;
-asn_struct_free_f T6_free;
-asn_struct_print_f T6_print;
-asn_constr_check_f T6_constraint;
-ber_type_decoder_f T6_decode_ber;
-der_type_encoder_f T6_encode_der;
-xer_type_encoder_f T6_encode_xer;
+/* This type is equivalent to REAL */
+#define	asn1_DEF_T6	asn1_DEF_REAL
 
 /*** <<< CODE [T6] >>> ***/
 
-int
-T6_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
-			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
-	td->check_constraints = asn1_DEF_REAL.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
-}
-
-/*
- * This type is implemented using REAL,
- * so here we adjust the DEF accordingly.
- */
-static void
-T6_inherit_TYPE_descriptor(asn1_TYPE_descriptor_t *td) {
-	td->free_struct    = asn1_DEF_REAL.free_struct;
-	td->print_struct   = asn1_DEF_REAL.print_struct;
-	td->ber_decoder    = asn1_DEF_REAL.ber_decoder;
-	td->der_encoder    = asn1_DEF_REAL.der_encoder;
-	td->xer_decoder    = asn1_DEF_REAL.xer_decoder;
-	td->xer_encoder    = asn1_DEF_REAL.xer_encoder;
-	td->last_tag_form  = asn1_DEF_REAL.last_tag_form;
-	td->elements       = asn1_DEF_REAL.elements;
-	td->elements_count = asn1_DEF_REAL.elements_count;
-	td->specifics      = asn1_DEF_REAL.specifics;
-}
-
-void
-T6_free(asn1_TYPE_descriptor_t *td,
-		void *struct_ptr, int contents_only) {
-	T6_inherit_TYPE_descriptor(td);
-	td->free_struct(td, struct_ptr, contents_only);
-}
-
-int
-T6_print(asn1_TYPE_descriptor_t *td, const void *struct_ptr,
-		int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->print_struct(td, struct_ptr, ilevel, cb, app_key);
-}
-
-ber_dec_rval_t
-T6_decode_ber(asn1_TYPE_descriptor_t *td,
-		void **structure, void *bufptr, size_t size, int tag_mode) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->ber_decoder(td, structure, bufptr, size, tag_mode);
-}
-
-asn_enc_rval_t
-T6_encode_der(asn1_TYPE_descriptor_t *td,
-		void *structure, int tag_mode, ber_tlv_tag_t tag,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->der_encoder(td, structure, tag_mode, tag, cb, app_key);
-}
-
-asn_enc_rval_t
-T6_encode_xer(asn1_TYPE_descriptor_t *td, void *structure,
-		int ilevel, enum xer_encoder_flags_e flags,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->xer_encoder(td, structure, ilevel, flags, cb, app_key);
-}
-
-
-/*** <<< STAT-DEFS [T6] >>> ***/
-
-static ber_tlv_tag_t asn1_DEF_T6_tags[] = {
-	(ASN_TAG_CLASS_UNIVERSAL | (9 << 2))
-};
-asn1_TYPE_descriptor_t asn1_DEF_T6 = {
-	"T6",
-	T6_free,
-	T6_print,
-	T6_constraint,
-	T6_decode_ber,
-	T6_encode_der,
-	0,				/* Not implemented yet */
-	T6_encode_xer,
-	0,	/* Use generic outmost tag fetcher */
-	asn1_DEF_T6_tags,
-	sizeof(asn1_DEF_T6_tags)
-		/sizeof(asn1_DEF_T6_tags[0]), /* 1 */
-	asn1_DEF_T6_tags,	/* Same as above */
-	sizeof(asn1_DEF_T6_tags)
-		/sizeof(asn1_DEF_T6_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
-	0, 0,	/* No members */
-	0	/* No specifics */
-};
+/* This type is equivalent to REAL */
 
 
 /*** <<< INCLUDES [T] >>> ***/
@@ -737,11 +622,9 @@
 int
 T_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_Ts.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -756,7 +639,6 @@
 	td->der_encoder    = asn1_DEF_Ts.der_encoder;
 	td->xer_decoder    = asn1_DEF_Ts.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Ts.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Ts.last_tag_form;
 	td->elements       = asn1_DEF_Ts.elements;
 	td->elements_count = asn1_DEF_Ts.elements_count;
 	td->specifics      = asn1_DEF_Ts.specifics;
@@ -823,7 +705,6 @@
 	asn1_DEF_T_tags,	/* Same as above */
 	sizeof(asn1_DEF_T_tags)
 		/sizeof(asn1_DEF_T_tags[0]), /* 3 */
-	-0,	/* Unknown yet */
 	0, 0,	/* Defined elsewhere */
 	0	/* No specifics */
 };
@@ -909,7 +790,6 @@
 	asn1_DEF_Ts_tags,	/* Same as above */
 	sizeof(asn1_DEF_Ts_tags)
 		/sizeof(asn1_DEF_Ts_tags[0]), /* 2 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Ts,
 	3,	/* Elements count */
 	&asn1_DEF_Ts_specs	/* Additional specs */
diff --git a/tests/65-multi-tag-OK.asn1.-Pfnative-types b/tests/65-multi-tag-OK.asn1.-Pfnative-types
index 67bfa8d..f12b902 100644
--- a/tests/65-multi-tag-OK.asn1.-Pfnative-types
+++ b/tests/65-multi-tag-OK.asn1.-Pfnative-types
@@ -23,11 +23,9 @@
 int
 T1_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T2.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -42,7 +40,6 @@
 	td->der_encoder    = asn1_DEF_T2.der_encoder;
 	td->xer_decoder    = asn1_DEF_T2.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T2.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T2.last_tag_form;
 	td->elements       = asn1_DEF_T2.elements;
 	td->elements_count = asn1_DEF_T2.elements_count;
 	td->specifics      = asn1_DEF_T2.specifics;
@@ -118,7 +115,6 @@
 	asn1_DEF_T1_all_tags,
 	sizeof(asn1_DEF_T1_all_tags)
 		/sizeof(asn1_DEF_T1_all_tags[0]), /* 6 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -148,11 +144,9 @@
 int
 T2_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T3.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -167,7 +161,6 @@
 	td->der_encoder    = asn1_DEF_T3.der_encoder;
 	td->xer_decoder    = asn1_DEF_T3.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T3.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T3.last_tag_form;
 	td->elements       = asn1_DEF_T3.elements;
 	td->elements_count = asn1_DEF_T3.elements_count;
 	td->specifics      = asn1_DEF_T3.specifics;
@@ -241,7 +234,6 @@
 	asn1_DEF_T2_all_tags,
 	sizeof(asn1_DEF_T2_all_tags)
 		/sizeof(asn1_DEF_T2_all_tags[0]), /* 5 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -271,11 +263,9 @@
 int
 T3_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T4.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -290,7 +280,6 @@
 	td->der_encoder    = asn1_DEF_T4.der_encoder;
 	td->xer_decoder    = asn1_DEF_T4.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T4.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T4.last_tag_form;
 	td->elements       = asn1_DEF_T4.elements;
 	td->elements_count = asn1_DEF_T4.elements_count;
 	td->specifics      = asn1_DEF_T4.specifics;
@@ -362,7 +351,6 @@
 	asn1_DEF_T3_all_tags,
 	sizeof(asn1_DEF_T3_all_tags)
 		/sizeof(asn1_DEF_T3_all_tags[0]), /* 4 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -392,11 +380,9 @@
 int
 T4_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T5.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -411,7 +397,6 @@
 	td->der_encoder    = asn1_DEF_T5.der_encoder;
 	td->xer_decoder    = asn1_DEF_T5.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T5.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T5.last_tag_form;
 	td->elements       = asn1_DEF_T5.elements;
 	td->elements_count = asn1_DEF_T5.elements_count;
 	td->specifics      = asn1_DEF_T5.specifics;
@@ -478,7 +463,6 @@
 	asn1_DEF_T4_tags,	/* Same as above */
 	sizeof(asn1_DEF_T4_tags)
 		/sizeof(asn1_DEF_T4_tags[0]), /* 3 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -508,11 +492,9 @@
 int
 T5_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_T6.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -527,7 +509,6 @@
 	td->der_encoder    = asn1_DEF_T6.der_encoder;
 	td->xer_decoder    = asn1_DEF_T6.xer_decoder;
 	td->xer_encoder    = asn1_DEF_T6.xer_encoder;
-	td->last_tag_form  = asn1_DEF_T6.last_tag_form;
 	td->elements       = asn1_DEF_T6.elements;
 	td->elements_count = asn1_DEF_T6.elements_count;
 	td->specifics      = asn1_DEF_T6.specifics;
@@ -593,7 +574,6 @@
 	asn1_DEF_T5_tags,	/* Same as above */
 	sizeof(asn1_DEF_T5_tags)
 		/sizeof(asn1_DEF_T5_tags[0]), /* 2 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };
@@ -610,107 +590,12 @@
 
 /*** <<< FUNC-DECLS [T6] >>> ***/
 
-extern asn1_TYPE_descriptor_t asn1_DEF_T6;
-asn_struct_free_f T6_free;
-asn_struct_print_f T6_print;
-asn_constr_check_f T6_constraint;
-ber_type_decoder_f T6_decode_ber;
-der_type_encoder_f T6_encode_der;
-xer_type_encoder_f T6_encode_xer;
+/* This type is equivalent to NativeReal */
+#define	asn1_DEF_T6	asn1_DEF_NativeReal
 
 /*** <<< CODE [T6] >>> ***/
 
-int
-T6_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
-			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
-	td->check_constraints = asn1_DEF_NativeReal.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
-}
-
-/*
- * This type is implemented using NativeReal,
- * so here we adjust the DEF accordingly.
- */
-static void
-T6_inherit_TYPE_descriptor(asn1_TYPE_descriptor_t *td) {
-	td->free_struct    = asn1_DEF_NativeReal.free_struct;
-	td->print_struct   = asn1_DEF_NativeReal.print_struct;
-	td->ber_decoder    = asn1_DEF_NativeReal.ber_decoder;
-	td->der_encoder    = asn1_DEF_NativeReal.der_encoder;
-	td->xer_decoder    = asn1_DEF_NativeReal.xer_decoder;
-	td->xer_encoder    = asn1_DEF_NativeReal.xer_encoder;
-	td->last_tag_form  = asn1_DEF_NativeReal.last_tag_form;
-	td->elements       = asn1_DEF_NativeReal.elements;
-	td->elements_count = asn1_DEF_NativeReal.elements_count;
-	td->specifics      = asn1_DEF_NativeReal.specifics;
-}
-
-void
-T6_free(asn1_TYPE_descriptor_t *td,
-		void *struct_ptr, int contents_only) {
-	T6_inherit_TYPE_descriptor(td);
-	td->free_struct(td, struct_ptr, contents_only);
-}
-
-int
-T6_print(asn1_TYPE_descriptor_t *td, const void *struct_ptr,
-		int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->print_struct(td, struct_ptr, ilevel, cb, app_key);
-}
-
-ber_dec_rval_t
-T6_decode_ber(asn1_TYPE_descriptor_t *td,
-		void **structure, void *bufptr, size_t size, int tag_mode) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->ber_decoder(td, structure, bufptr, size, tag_mode);
-}
-
-asn_enc_rval_t
-T6_encode_der(asn1_TYPE_descriptor_t *td,
-		void *structure, int tag_mode, ber_tlv_tag_t tag,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->der_encoder(td, structure, tag_mode, tag, cb, app_key);
-}
-
-asn_enc_rval_t
-T6_encode_xer(asn1_TYPE_descriptor_t *td, void *structure,
-		int ilevel, enum xer_encoder_flags_e flags,
-		asn_app_consume_bytes_f *cb, void *app_key) {
-	T6_inherit_TYPE_descriptor(td);
-	return td->xer_encoder(td, structure, ilevel, flags, cb, app_key);
-}
-
-
-/*** <<< STAT-DEFS [T6] >>> ***/
-
-static ber_tlv_tag_t asn1_DEF_T6_tags[] = {
-	(ASN_TAG_CLASS_UNIVERSAL | (9 << 2))
-};
-asn1_TYPE_descriptor_t asn1_DEF_T6 = {
-	"T6",
-	T6_free,
-	T6_print,
-	T6_constraint,
-	T6_decode_ber,
-	T6_encode_der,
-	0,				/* Not implemented yet */
-	T6_encode_xer,
-	0,	/* Use generic outmost tag fetcher */
-	asn1_DEF_T6_tags,
-	sizeof(asn1_DEF_T6_tags)
-		/sizeof(asn1_DEF_T6_tags[0]), /* 1 */
-	asn1_DEF_T6_tags,	/* Same as above */
-	sizeof(asn1_DEF_T6_tags)
-		/sizeof(asn1_DEF_T6_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
-	0, 0,	/* No members */
-	0	/* No specifics */
-};
+/* This type is equivalent to NativeReal */
 
 
 /*** <<< INCLUDES [T] >>> ***/
@@ -737,11 +622,9 @@
 int
 T_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_Ts.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -756,7 +639,6 @@
 	td->der_encoder    = asn1_DEF_Ts.der_encoder;
 	td->xer_decoder    = asn1_DEF_Ts.xer_decoder;
 	td->xer_encoder    = asn1_DEF_Ts.xer_encoder;
-	td->last_tag_form  = asn1_DEF_Ts.last_tag_form;
 	td->elements       = asn1_DEF_Ts.elements;
 	td->elements_count = asn1_DEF_Ts.elements_count;
 	td->specifics      = asn1_DEF_Ts.specifics;
@@ -823,7 +705,6 @@
 	asn1_DEF_T_tags,	/* Same as above */
 	sizeof(asn1_DEF_T_tags)
 		/sizeof(asn1_DEF_T_tags[0]), /* 3 */
-	-0,	/* Unknown yet */
 	0, 0,	/* Defined elsewhere */
 	0	/* No specifics */
 };
@@ -909,7 +790,6 @@
 	asn1_DEF_Ts_tags,	/* Same as above */
 	sizeof(asn1_DEF_Ts_tags)
 		/sizeof(asn1_DEF_Ts_tags[0]), /* 2 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_Ts,
 	3,	/* Elements count */
 	&asn1_DEF_Ts_specs	/* Additional specs */
diff --git a/tests/66-ref-simple-OK.asn1.-P b/tests/66-ref-simple-OK.asn1.-P
index b023ad4..03027f0 100644
--- a/tests/66-ref-simple-OK.asn1.-P
+++ b/tests/66-ref-simple-OK.asn1.-P
@@ -54,7 +54,6 @@
 	asn1_DEF_T_tags,	/* Same as above */
 	sizeof(asn1_DEF_T_tags)
 		/sizeof(asn1_DEF_T_tags[0]), /* 1 */
-	1,	/* Whether CONSTRUCTED */
 	asn1_MBR_T,
 	1,	/* Single element */
 	&asn1_DEF_T_specs	/* Additional specs */
@@ -93,11 +92,9 @@
 int
 SimpleType_constraint(asn1_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
-	
-	/* Make the underlying type checker permanent */
+	/* Replace with underlying type checker */
 	td->check_constraints = asn1_DEF_ENUMERATED.check_constraints;
-	return td->check_constraints
-		(td, sptr, app_errlog, app_key);
+	return td->check_constraints(td, sptr, app_errlog, app_key);
 }
 
 /*
@@ -112,7 +109,6 @@
 	td->der_encoder    = asn1_DEF_ENUMERATED.der_encoder;
 	td->xer_decoder    = asn1_DEF_ENUMERATED.xer_decoder;
 	td->xer_encoder    = asn1_DEF_ENUMERATED.xer_encoder;
-	td->last_tag_form  = asn1_DEF_ENUMERATED.last_tag_form;
 	td->elements       = asn1_DEF_ENUMERATED.elements;
 	td->elements_count = asn1_DEF_ENUMERATED.elements_count;
 	td->specifics      = asn1_DEF_ENUMERATED.specifics;
@@ -177,7 +173,6 @@
 	asn1_DEF_SimpleType_tags,	/* Same as above */
 	sizeof(asn1_DEF_SimpleType_tags)
 		/sizeof(asn1_DEF_SimpleType_tags[0]), /* 1 */
-	-0,	/* Unknown yet */
 	0, 0,	/* No members */
 	0	/* No specifics */
 };