Demo 2¶

-Wimplicit-fallthrough¶: -Wimplicit-fallthrough is the same as -Wimplicit-fallthrough=3 and -Wno-implicit-fallthrough is the same as -Wimplicit-fallthrough=0.

-Wno-implicit-fallthrough¶: Default setting; overrides -Wimplicit-fallthrough.

-Wimplicit-fallthrough=n¶: Warn when a switch case falls through. For example: …

-Wimplicit-fallthrough=0¶: Disable it altogether.

-Wimplicit-fallthrough=1¶: Level 1

-Wimplicit-fallthrough=2¶: Level 2

-Wimplicit-fallthrough=3¶: Level 3

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Try -Wimplicit-fallthrough= or -Wimplicit-fallthrough or -Wimplicit-fallthrough=n.