Make warnings under Solaris 9 with gcc

Hi,

I'm new to this least, please bear with me.

Running Solaris 9 Sparc I get the following warnings when making sophie:

# make
gcc -g -O2 -Wall -Isav_if  -c  sophie.c
gcc -g -O2 -Wall -Isav_if  -c  sophie_init.c
sophie_init.c: In function `sophie_init':
sophie_init.c:26: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
sophie_init.c:35: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
sophie_init.c: In function `sophie_show_settings':
sophie_init.c:518: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
sophie_init.c:536: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
gcc -g -O2 -Wall -Isav_if  -c  sophie_scandir.c
gcc -g -O2 -Wall -Isav_if  -c  sophie_core.c
sophie_core.c: In function `sophie_log_virus':
sophie_core.c:408: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
sophie_core.c: In function `sophie_scanfile':
sophie_core.c:442: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
sophie_core.c: In function `sophie_version':
sophie_core.c:752: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
gcc -g -O2 -Wall -Isav_if  -c  sophie_notify.c
gcc -g -O2 -Wall -Isav_if -Wl,-R/usr/local/lib -L/usr/local/lib -lrt 
-lsocket  -lsavi sophie.o sophie_init.o sophie_scandir.o sophie

Should I be worried? What does the warning mean (I'm not a programmer)? 
Can I trust the 'sophie' image created by this make?

/rolf