The fall-through comment is not taken in consideration by gcc 8.1.1 because it is inside the braces of a C-code block. Move the comment outside the C block. Change-Id: I22d87b2dee109fb8bcf2071ac55fdf7171ffcf4b Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: http://openocd.zylin.com/4614 Tested-by: jenkins Reviewed-by: Tomas Vanek <vanekt@fbl.cz>