Issue #539: reset the serializer when json_object_set_double() is called and the current serializer is the one that json_object_new_double_s() used.

json_object.c

@@ -999,6 +999,8 @@ int json_object_set_double(struct json_object *jso,double new_value){
 	if (!jso || jso->o_type!=json_type_double)
 		return 0;
 	jso->o.c_double=new_value;
+	if (jso->_to_json_string == &json_object_userdata_to_json_string)
+	    json_object_set_serializer(jso, NULL, NULL, NULL);
 	return 1;
 }
 

tests/test_set_value.c

@@ -45,8 +45,14 @@ int main(int argc, char **argv)
 	assert (strcmp(json_object_get_string(tmp),SHORT)==0); 
 	json_object_put(tmp);
 	printf("STRING PASSED\n");
-	
-	
+
+	tmp = json_tokener_parse("1.234");
+	json_object_set_double(tmp, 12.3);
+	const char *serialized = json_object_to_json_string(tmp);
+	fprintf(stderr, "%s\n", serialized);
+	assert(strncmp(serialized, "12.3", 4)==0);
+	printf("PARSE AND SET PASSED\n");
+
 	printf("PASSED\n");
 	return 0;
 }

tests/test_set_value.expected

@@ -3,4 +3,5 @@ INT64 PASSED
 BOOL PASSED
 DOUBLE PASSED
 STRING PASSED
+PARSE AND SET PASSED
 PASSED