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

Code:
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
...