I have two projects targeting Kinetis KE18 with separate workspaces. MCUXpresso is version 10.0.2. Much of the code is the same between the two, and as near as I can tell, have the same settings. One builds and warns when we have intentional fall-throughs in a swtich statement. The other, with the identical case statement, does not show a warning. All warnings are enabled in the build.
Looking further though, it appears that GCC is not flagging the warning. If it builds, no warnings are shown on the console when it compiles the file in question. It appears those warnings are coming from Eclipse somehow. I have looked at the Eclipse settings, but I can't tell what settings are different. I see the error parsers under preferences, but they seem to be the same. No options are checked under code analysis.