I got this error trying to build last night on MacOS 10.6.4:
cc1plus: warnings being treated as errors
/Users/stephen/dev/java/src/bsd/hotspot/src/share/vm/services/attachListener.cpp:
In function 'jint set_uint64_t_flag(const
char*, AttachOperation*, outputStream*)':
/Users/stephen/dev/java/src/bsd/hotspot/src/share/vm/services/attachListener.cpp:265:
warning: format '%lu' expects type 'long
unsigned int*', but argument 3 has type 'uint64_t*'
make[6]: *** [attachListener.o] Error 1
make[6]: *** Waiting for unfinished jobs....
make[5]: *** [the_vm] Error 2
make[4]: *** [product] Error 2
make[3]: *** [generic_build2] Error 2
make[2]: *** [product] Error 2
make[1]: *** [hotspot-build] Error 2
make: *** [build_product_image] Error 2
