test for utf8 constraint code generation

tests/50-constraint-OK.asn1

@@ -45,7 +45,7 @@ BEGIN
 	SIZE-and-FROM ::= PER-Visible (SIZE(1..4) ^ FROM("ABCD"))
 	Neither-SIZE-nor-FROM ::= PER-Visible (SIZE(1..4) | FROM("ABCD",...))
 
-	Utf8-4 ::= UTF8String (FROM("A".."Z"|"a".."z"))	-- Alphabet
+	Utf8-4 ::= UTF8String (FROM("A".."Z"))		-- Alphabet
 	Utf8-3 ::= Utf8-2 (FROM("A".."Z"|"a".."z"))	-- Alphabet and size
 	Utf8-2 ::= Utf8-1 (SIZE(1..2))			-- Size
 	Utf8-1 ::= UTF8String

tests/50-constraint-OK.asn1.-P

@@ -2347,7 +2347,7 @@ Utf8_3_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
 	}
 	
 	size = UTF8String_length(st);
-	if(size < 0) {
+	if((ssize_t)size < 0) {
 		_ASN_ERRLOG(app_errlog, app_key,
 			"%s: UTF-8: broken encoding (%s:%d)",
 			td->name, __FILE__, __LINE__);
@@ -2482,7 +2482,7 @@ Utf8_2_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
 	}
 	
 	size = UTF8String_length(st);
-	if(size < 0) {
+	if((ssize_t)size < 0) {
 		_ASN_ERRLOG(app_errlog, app_key,
 			"%s: UTF-8: broken encoding (%s:%d)",
 			td->name, __FILE__, __LINE__);