Compilation warnings on OS X

[DarwinXNU]

When building 64-bit agent (2.4.2) on OS X 10.9 I get several warnings like this:

gcc -DHAVE_CONFIG_H -I. -I../../../include     -g -O2    -MT misc.o -MD -MP -MF .deps/misc.Tpo -c -o misc.o misc.c
misc.c:1810:48: warning: format specifies type 'unsigned long *' but the argument has type 'uint64_t *' (aka 'unsigned long long *') [-Wformat]
                if (sscanf(start,ZBX_FS_UI64 "-" ZBX_FS_UI64,&i1,&i2) == 2)

If I build a 32-bit version with:

CFLAGS="-arch i386" ./configure --enable-agent

...I don't get the warnings. I'm not sure how much of an issue these warnings are, documentation recommends using 64-bit agent on a 64-bit platform and the agent seems to run normally.

Has anyone noticed any problems with the 64-bit agent, or 32-bit agent on a 64-bit OS X?