Module Loading Warnings
 

Why on my Fedora core 1 installation when i compile any module with -Wall i
got following warnings? What are these warnings? Also what is
1)__set_64bit_var
2)dereferencing type-punned pointer will break strict-aliasing rules
warnings?
gcc -c -O2 -Wall -D__KERNEL__ -DMODULE -I/usr/src/linux-2.4.22-1.2115.nptl/include -I../inc mainMod.c -o mainMod.o
In file included from
/usr/src/linux-2.4.22-1.2115.nptl/include/asm/semaphore.h:39,
from
/usr/src/linux-2.4.22-1.2115.nptl/include/linux/fs.h:202,
from
/usr/src/linux-2.4.22-1.2115.nptl/include/linux/capability.h:17,
from
/usr/src/linux-2.4.22-1.2115.nptl/include/linux/binfmts.h:4,
from
/usr/src/linux-2.4.22-1.2115.nptl/include/linux/sched.h:10,
from /usr/src/linux-2.4.22-1.2115.nptl/include/linux/mm.h:4,
from
/usr/src/linux-2.4.22-1.2115.nptl/include/linux/slab.h:14,
from mainMod.c:12:
/usr/src/linux-2.4.22-1.2115.nptl/include/asm/system.h: In function
`__set_64bit_var':
/usr/src/linux-2.4.22-1.2115.nptl/include/asm/system.h:189: warning:
dereferencing type-punned pointer will break strict-aliasing rules
/usr/src/linux-2.4.22-1.2115.nptl/include/asm/system.h:189: warning:
dereferencing type-punned pointer will break strict-aliasing rules