gcc 4.3.2 is currently coughing up warnings like this:
Objects/object.c: In function 'internal_print':
Objects/object.c:301: warning: ignoring return value of 'fwrite',
declared with attribute warn_unused_result
Objects/object.c:310: warning: ignoring return value of 'fwrite',
declared with attribute warn_unused_result
Python/marshal.c: In function 'w_string':
Python/marshal.c:97: warning: ignoring return value of 'fwrite',
declared with attribute warn_unused_result
./Modules/signalmodule.c: In function 'signal_handler':
./Modules/signalmodule.c:182: warning: ignoring return value of 'write',
declared with attribute warn_unused_result