1 files changed, 3 insertions, 0 deletions
diff --git a/liberror.h b/liberror.h
index d692c7b..9f93fe9 100644
--- a/liberror.h
+++ b/liberror.h
@@ -251,6 +251,9 @@ struct liberror_state {
  * 
  * @return  The current error, `NULL` if none
  */
+#if defined(__GNUC__)
+__attribute__((__pure__))
+#endif
 struct liberror_error *liberror_get_error(void);
 
 /**