Note that compiling config/msp430/msp430.c gives what seems to be a valid warning:
../../gcc/config/msp430/msp430.c: In function `msp430_cbranch': ../../gcc/config/msp430/msp430.c:5722: warning: `mode' might be used uninitialized in this function The variable 'quater' in this function is initialised from the uninitialised variable 'mode'. Regards, --Daniel