Merge pull request #294 from vstakhov/vstakhov-fix-fuzz

Fix issues with the include error propagation

src/ucl_parser.c

@@ -2691,6 +2691,9 @@ ucl_state_machine (struct ucl_parser *parser)
 				return false;
 			}
 			break;
+		case UCL_STATE_ERROR:
+			/* Already in the error state */
+			return false;
 		default:
 			ucl_set_err (parser, UCL_EINTERNAL,
 					"internal error: parser is in an unknown state", &parser->err);

src/ucl_util.c

@@ -1100,6 +1100,11 @@ ucl_include_file_single (const unsigned char *data, size_t len,
 	ucl_hash_t *container = NULL;
 	struct ucl_stack *st = NULL;
 
+	if (parser->state == UCL_STATE_ERROR) {
+		/* Return immediately if we are in the error state... */
+		return false;
+	}
+
 	snprintf (filebuf, sizeof (filebuf), "%.*s", (int)len, data);
 	if (ucl_realpath (filebuf, realbuf) == NULL) {
 		if (params->soft_fail) {