removed -N command-line argument
diff --git a/tests/20-constr-OK.asn1.-EF b/tests/20-constr-OK.asn1.-EF
new file mode 100644
index 0000000..bf4e396
--- /dev/null
+++ b/tests/20-constr-OK.asn1.-EF
@@ -0,0 +1,24 @@
+
+ModuleTestConstr {iso(-1) org(3) dod(6) internet(1) private(4)
+ enterprise(1) spelio(9363) software(1) asn1c(5) test(1)
+ 20 }
+DEFINITIONS IMPLICIT TAGS EXTENSIBILITY IMPLIED ::=
+BEGIN
+
+ConstructedType1 ::= SEQUENCE {
+ a [1] IMPLICIT INTEGER,
+ b [2] IMPLICIT INTEGER,
+ d UTF8String,
+ ...!ex1,
+ c IA5String
+}
+
+ConstructedType2 ::= SET {
+ a [1] IMPLICIT INTEGER,
+ b [2] IMPLICIT INTEGER,
+ ...
+}
+
+ex1 INTEGER ::= 1
+
+END