diff --git a/tests/19-param-OK.asn1.-P b/tests/19-param-OK.asn1.-P
index 8ffd617..321e71a 100644
--- a/tests/19-param-OK.asn1.-P
+++ b/tests/19-param-OK.asn1.-P
@@ -32,7 +32,7 @@
 /*** <<< CODE [Certificate] >>> ***/
 
 static int
-memb_signature_1_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
+memb_signature_constraint_1(asn_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
 	const BIT_STRING_t *st = (const BIT_STRING_t *)sptr;
 	size_t size;
@@ -71,6 +71,8 @@
 		.tag_mode = 0,
 		.type = &asn_DEF_INTEGER,
 		.memb_constraints = 0,	/* Defer constraints checking to the member type */
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = "version"
 		},
 	{ ATF_NOFLAGS, 0, offsetof(struct toBeSigned, signature),
@@ -78,6 +80,8 @@
 		.tag_mode = 0,
 		.type = &asn_DEF_OBJECT_IDENTIFIER,
 		.memb_constraints = 0,	/* Defer constraints checking to the member type */
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = "signature"
 		},
 	{ ATF_NOFLAGS, 0, offsetof(struct toBeSigned, issuer),
@@ -85,22 +89,25 @@
 		.tag_mode = 0,
 		.type = &asn_DEF_Name,
 		.memb_constraints = 0,	/* Defer constraints checking to the member type */
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = "issuer"
 		},
 };
-static ber_tlv_tag_t asn_DEF_toBeSigned_2_tags[] = {
+static ber_tlv_tag_t asn_DEF_toBeSigned_tags_2[] = {
 	(ASN_TAG_CLASS_UNIVERSAL | (16 << 2))
 };
-static asn_TYPE_tag2member_t asn_MAP_toBeSigned_2_tag2el[] = {
+static asn_TYPE_tag2member_t asn_MAP_toBeSigned_tag2el_2[] = {
     { (ASN_TAG_CLASS_UNIVERSAL | (2 << 2)), 0, 0, 0 }, /* version at 21 */
     { (ASN_TAG_CLASS_UNIVERSAL | (6 << 2)), 1, 0, 0 }, /* signature at 22 */
     { (ASN_TAG_CLASS_UNIVERSAL | (16 << 2)), 2, 0, 0 } /* issuer at 24 */
 };
-static asn_SEQUENCE_specifics_t asn_SPC_toBeSigned_2_specs = {
+static asn_SEQUENCE_specifics_t asn_SPC_toBeSigned_specs_2 = {
 	sizeof(struct toBeSigned),
 	offsetof(struct toBeSigned, _asn_ctx),
-	asn_MAP_toBeSigned_2_tag2el,
+	asn_MAP_toBeSigned_tag2el_2,
 	3,	/* Count of tags in the map */
+	0, 0, 0,	/* Optional elements (not needed) */
 	-1,	/* Start extensions */
 	-1	/* Stop extensions */
 };
@@ -115,16 +122,18 @@
 	SEQUENCE_encode_der,
 	SEQUENCE_decode_xer,
 	SEQUENCE_encode_xer,
+	0,	/* No PER decoder, -gen-PER to enable */
 	0,	/* Use generic outmost tag fetcher */
-	asn_DEF_toBeSigned_2_tags,
-	sizeof(asn_DEF_toBeSigned_2_tags)
-		/sizeof(asn_DEF_toBeSigned_2_tags[0]), /* 1 */
-	asn_DEF_toBeSigned_2_tags,	/* Same as above */
-	sizeof(asn_DEF_toBeSigned_2_tags)
-		/sizeof(asn_DEF_toBeSigned_2_tags[0]), /* 1 */
+	asn_DEF_toBeSigned_tags_2,
+	sizeof(asn_DEF_toBeSigned_tags_2)
+		/sizeof(asn_DEF_toBeSigned_tags_2[0]), /* 1 */
+	asn_DEF_toBeSigned_tags_2,	/* Same as above */
+	sizeof(asn_DEF_toBeSigned_tags_2)
+		/sizeof(asn_DEF_toBeSigned_tags_2[0]), /* 1 */
+	0,	/* No PER visible constraints */
 	asn_MBR_toBeSigned_2,
 	3,	/* Elements count */
-	&asn_SPC_toBeSigned_2_specs	/* Additional specs */
+	&asn_SPC_toBeSigned_specs_2	/* Additional specs */
 };
 
 static asn_TYPE_member_t asn_MBR_Certificate_1[] = {
@@ -133,6 +142,8 @@
 		.tag_mode = 0,
 		.type = &asn_DEF_toBeSigned_2,
 		.memb_constraints = 0,	/* Defer constraints checking to the member type */
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = "toBeSigned"
 		},
 	{ ATF_NOFLAGS, 0, offsetof(struct Certificate, algorithm),
@@ -140,29 +151,34 @@
 		.tag_mode = 0,
 		.type = &asn_DEF_OBJECT_IDENTIFIER,
 		.memb_constraints = 0,	/* Defer constraints checking to the member type */
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = "algorithm"
 		},
 	{ ATF_NOFLAGS, 0, offsetof(struct Certificate, signature),
 		.tag = (ASN_TAG_CLASS_UNIVERSAL | (3 << 2)),
 		.tag_mode = 0,
 		.type = &asn_DEF_BIT_STRING,
-		.memb_constraints = memb_signature_1_constraint,
+		.memb_constraints = memb_signature_constraint_1,
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = "signature"
 		},
 };
-static ber_tlv_tag_t asn_DEF_Certificate_1_tags[] = {
+static ber_tlv_tag_t asn_DEF_Certificate_tags_1[] = {
 	(ASN_TAG_CLASS_UNIVERSAL | (16 << 2))
 };
-static asn_TYPE_tag2member_t asn_MAP_Certificate_1_tag2el[] = {
+static asn_TYPE_tag2member_t asn_MAP_Certificate_tag2el_1[] = {
     { (ASN_TAG_CLASS_UNIVERSAL | (3 << 2)), 2, 0, 0 }, /* signature at 17 */
     { (ASN_TAG_CLASS_UNIVERSAL | (6 << 2)), 1, 0, 0 }, /* algorithm at 16 */
     { (ASN_TAG_CLASS_UNIVERSAL | (16 << 2)), 0, 0, 0 } /* toBeSigned at 21 */
 };
-static asn_SEQUENCE_specifics_t asn_SPC_Certificate_1_specs = {
+static asn_SEQUENCE_specifics_t asn_SPC_Certificate_specs_1 = {
 	sizeof(struct Certificate),
 	offsetof(struct Certificate, _asn_ctx),
-	asn_MAP_Certificate_1_tag2el,
+	asn_MAP_Certificate_tag2el_1,
 	3,	/* Count of tags in the map */
+	0, 0, 0,	/* Optional elements (not needed) */
 	-1,	/* Start extensions */
 	-1	/* Stop extensions */
 };
@@ -176,16 +192,18 @@
 	SEQUENCE_encode_der,
 	SEQUENCE_decode_xer,
 	SEQUENCE_encode_xer,
+	0,	/* No PER decoder, -gen-PER to enable */
 	0,	/* Use generic outmost tag fetcher */
-	asn_DEF_Certificate_1_tags,
-	sizeof(asn_DEF_Certificate_1_tags)
-		/sizeof(asn_DEF_Certificate_1_tags[0]), /* 1 */
-	asn_DEF_Certificate_1_tags,	/* Same as above */
-	sizeof(asn_DEF_Certificate_1_tags)
-		/sizeof(asn_DEF_Certificate_1_tags[0]), /* 1 */
+	asn_DEF_Certificate_tags_1,
+	sizeof(asn_DEF_Certificate_tags_1)
+		/sizeof(asn_DEF_Certificate_tags_1[0]), /* 1 */
+	asn_DEF_Certificate_tags_1,	/* Same as above */
+	sizeof(asn_DEF_Certificate_tags_1)
+		/sizeof(asn_DEF_Certificate_tags_1[0]), /* 1 */
+	0,	/* No PER visible constraints */
 	asn_MBR_Certificate_1,
 	3,	/* Elements count */
-	&asn_SPC_Certificate_1_specs	/* Additional specs */
+	&asn_SPC_Certificate_specs_1	/* Additional specs */
 };
 
 
@@ -223,13 +241,15 @@
 		.tag_mode = 0,
 		.type = &asn_DEF_RelativeDistinguishedName,
 		.memb_constraints = 0,	/* Defer constraints checking to the member type */
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = ""
 		},
 };
-static ber_tlv_tag_t asn_DEF_Name_1_tags[] = {
+static ber_tlv_tag_t asn_DEF_Name_tags_1[] = {
 	(ASN_TAG_CLASS_UNIVERSAL | (16 << 2))
 };
-static asn_SET_OF_specifics_t asn_SPC_Name_1_specs = {
+static asn_SET_OF_specifics_t asn_SPC_Name_specs_1 = {
 	sizeof(struct Name),
 	offsetof(struct Name, _asn_ctx),
 	0,	/* XER encoding is XMLDelimitedItemList */
@@ -244,16 +264,18 @@
 	SEQUENCE_OF_encode_der,
 	SEQUENCE_OF_decode_xer,
 	SEQUENCE_OF_encode_xer,
+	0,	/* No PER decoder, -gen-PER to enable */
 	0,	/* Use generic outmost tag fetcher */
-	asn_DEF_Name_1_tags,
-	sizeof(asn_DEF_Name_1_tags)
-		/sizeof(asn_DEF_Name_1_tags[0]), /* 1 */
-	asn_DEF_Name_1_tags,	/* Same as above */
-	sizeof(asn_DEF_Name_1_tags)
-		/sizeof(asn_DEF_Name_1_tags[0]), /* 1 */
+	asn_DEF_Name_tags_1,
+	sizeof(asn_DEF_Name_tags_1)
+		/sizeof(asn_DEF_Name_tags_1[0]), /* 1 */
+	asn_DEF_Name_tags_1,	/* Same as above */
+	sizeof(asn_DEF_Name_tags_1)
+		/sizeof(asn_DEF_Name_tags_1[0]), /* 1 */
+	0,	/* No PER visible constraints */
 	asn_MBR_Name_1,
 	1,	/* Single element */
-	&asn_SPC_Name_1_specs	/* Additional specs */
+	&asn_SPC_Name_specs_1	/* Additional specs */
 };
 
 
@@ -307,7 +329,7 @@
 /*** <<< CODE [RelativeDistinguishedName] >>> ***/
 
 static int
-memb_IA5String_1_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
+memb_IA5String_constraint_1(asn_TYPE_descriptor_t *td, const void *sptr,
 			asn_app_consume_bytes_f *app_errlog, void *app_key) {
 	const IA5String_t *st = (const IA5String_t *)sptr;
 	
@@ -338,14 +360,16 @@
 		.tag = (ASN_TAG_CLASS_UNIVERSAL | (22 << 2)),
 		.tag_mode = 0,
 		.type = &asn_DEF_IA5String,
-		.memb_constraints = memb_IA5String_1_constraint,
+		.memb_constraints = memb_IA5String_constraint_1,
+		.per_constraints = 0,	/* PER is not compiled, use -gen-PER */
+		.default_value = 0,
 		.name = ""
 		},
 };
-static ber_tlv_tag_t asn_DEF_RelativeDistinguishedName_1_tags[] = {
+static ber_tlv_tag_t asn_DEF_RelativeDistinguishedName_tags_1[] = {
 	(ASN_TAG_CLASS_UNIVERSAL | (17 << 2))
 };
-static asn_SET_OF_specifics_t asn_SPC_RelativeDistinguishedName_1_specs = {
+static asn_SET_OF_specifics_t asn_SPC_RelativeDistinguishedName_specs_1 = {
 	sizeof(struct RelativeDistinguishedName),
 	offsetof(struct RelativeDistinguishedName, _asn_ctx),
 	0,	/* XER encoding is XMLDelimitedItemList */
@@ -360,15 +384,17 @@
 	SET_OF_encode_der,
 	SET_OF_decode_xer,
 	SET_OF_encode_xer,
+	0,	/* No PER decoder, -gen-PER to enable */
 	0,	/* Use generic outmost tag fetcher */
-	asn_DEF_RelativeDistinguishedName_1_tags,
-	sizeof(asn_DEF_RelativeDistinguishedName_1_tags)
-		/sizeof(asn_DEF_RelativeDistinguishedName_1_tags[0]), /* 1 */
-	asn_DEF_RelativeDistinguishedName_1_tags,	/* Same as above */
-	sizeof(asn_DEF_RelativeDistinguishedName_1_tags)
-		/sizeof(asn_DEF_RelativeDistinguishedName_1_tags[0]), /* 1 */
+	asn_DEF_RelativeDistinguishedName_tags_1,
+	sizeof(asn_DEF_RelativeDistinguishedName_tags_1)
+		/sizeof(asn_DEF_RelativeDistinguishedName_tags_1[0]), /* 1 */
+	asn_DEF_RelativeDistinguishedName_tags_1,	/* Same as above */
+	sizeof(asn_DEF_RelativeDistinguishedName_tags_1)
+		/sizeof(asn_DEF_RelativeDistinguishedName_tags_1[0]), /* 1 */
+	0,	/* No PER visible constraints */
 	asn_MBR_RelativeDistinguishedName_1,
 	1,	/* Single element */
-	&asn_SPC_RelativeDistinguishedName_1_specs	/* Additional specs */
+	&asn_SPC_RelativeDistinguishedName_specs_1	/* Additional specs */
 };