Index: denali.pro
===================================================================
diff -u -r7ade985f2bd6ab1d8dd50ed6353d348a0619a803 -rb798668f16ad0967ab97e96f5f9a2cdd821e899f
--- denali.pro	(.../denali.pro)	(revision 7ade985f2bd6ab1d8dd50ed6353d348a0619a803)
+++ denali.pro	(.../denali.pro)	(revision b798668f16ad0967ab97e96f5f9a2cdd821e899f)
@@ -1,6 +1,6 @@
 QT += widgets qml quick serialbus concurrent
 CONFIG += c++17 warn_on
-QMAKE_CXXFLAGS += -Wall -Werror # -save-temps
+QMAKE_CXXFLAGS += -Wall -Werror -Wimplicit-fallthrough # -save-temps
 
 #CONFIG  += disable_crc
 disable_crc {