--- include/IrcCore/irccore_p.h.orig	2020-10-30 04:02:01.000000000 +0800
+++ include/IrcCore/irccore_p.h	2023-07-01 20:26:25.000000000 +0800
@@ -70,7 +70,7 @@
 #endif
 
 #ifndef Q_FALLTHROUGH
-#   if (defined(Q_CC_GNU) && Q_CC_GNU >= 700) && !defined(Q_CC_INTEL)
+#   if (defined(Q_CC_GNU) && !defined(Q_CC_INTEL))
 #       define Q_FALLTHROUGH() __attribute__((fallthrough))
 #   else
 #       define Q_FALLTHROUGH() (void)0