https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114191
--- Comment #2 from Georg-Johann Lay <gjl at gcc dot gnu.org> --- (In reply to Richard Biener from comment #1) > Wmisspelled-isr > Target C C++ Var(avr_warn_misspelled_isr) Init(1) > Warn if the ISR is misspelled, ... > > should eventually work? With that, the warnings appear as they should, but the option is not recognized: $ avr-gcc signal.c -S -Wmisspelled-isr error: unrecognized command-line option '-Wmisspelled-isr' $ avr-gcc signal.c -S -Wno-misspelled-isr error: unrecognized command-line option '-Wno-misspelled-isr' $ avr-gcc signal.c -S -Werror=misspelled-isr error: '-Werror=misspelled-isr': '-Wmisspelled-isr' is not an option that controls warnings
