limited range of the data type.
The only new warning this causes (if i didnt miss one) is:
udp.c:272: warning: comparison of unsigned expression < 0 is always false
which is a real bug
Originally committed as revision 11839 to svn://svn.ffmpeg.org/ffmpeg/trunk
check_cflags -Wno-pointer-sign
check_cflags -Wcast-qual
check_cflags -Wwrite-strings
+check_cflags -Wtype-limits
enabled extra_warnings && check_cflags -Winline
# add some linker flags