ignore single value constraint which looks like a (bit)string itself
diff --git a/tests/tests-asn1c-compiler/153-single-value-constraint-OK.asn1 b/tests/tests-asn1c-compiler/153-single-value-constraint-OK.asn1
new file mode 100644
index 0000000..ea87f14
--- /dev/null
+++ b/tests/tests-asn1c-compiler/153-single-value-constraint-OK.asn1
@@ -0,0 +1,19 @@
+
+-- OK: Everything is fine
+
+-- iso.org.dod.internet.private.enterprise (1.3.6.1.4.1)
+-- .spelio.software.asn1c.test (9363.1.5.1)
+-- .153
+
+ModuleSingleValueConstraint
+ { iso org(3) dod(6) internet(1) private(4) enterprise(1)
+ spelio(9363) software(1) asn1c(5) test(1) 153 }
+DEFINITIONS ::= BEGIN
+
+ zero8 OCTET STRING ::= '0000000000000000'H
+
+ Index ::= SEQUENCE {
+ padding OCTET STRING (SIZE(8)) (zero8)
+ }
+
+END