if (!lex_force_string_or_id (lexer))
return CMD_FAILURE;
- relative_name = utf8_to_filename (lex_tokcstr (lexer));
+ relative_name = utf8_to_filename (lex_tokcstr (lexer));
+ if (NULL == relative_name)
+ return CMD_FAILURE;
+
filename = include_path_search (relative_name);
free (relative_name);