2.5.30 compile fails

If this is of interestin to anyone I'd be happy to supply the .config file as well.

buffer.c: In function `__buffer_error':
buffer.c:65: warning: implicit declaration of function show_stack' check.c: In function devfs_register_partitions':
check.c:470: array subscript is not an integer
make[2]: *** [check.o] Error 1
make[1]: *** [partitions] Error 2
make: *** [fs] Error 2