ep-engine.h fails to compile on ubuntu (warnings as errors)

but seems to compile ok on rhel...

see...

http://builds.hq.northscale.net:8010/builders/wallace_ubuntu_9.04_64/builds/112/steps/compile/logs/stdio

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libtool: compile: g++ -DHAVE_CONFIG_H -I../../repo_memcached/memcached/include -I. -I. -I. -ggdb3 -DSQLITE_HAS_CODEC=0 -I../../repo_memcached/memcached/include -pipe -O3 -Werror -pedantic -Wall -Wundef -Wshadow -fdiagnostics-show-option -fvisibility=hidden -Wformat -fno-strict-aliasing -Wno-strict-aliasing -Wextra -Woverloaded-virtual -Wnon-virtual-dtor -Wctor-dtor-privacy -Wno-long-long -Wmissing-declarations -Wno-redundant-decls -std=gnu++0x -MT ep_la-ep_engine.lo -MD -MP -MF .deps/ep_la-ep_engine.Tpo -c ep_engine.cc -fPIC -DPIC -o .libs/ep_la-ep_engine.o
cc1plus: warnings being treated as errors
ep_engine.h: In member function ‘ENGINE_ERROR_CODE EventuallyPersistentEngine::initialize(const char*)’:
ep_engine.h:478: error: array subscript is above array bounds [-Warray-bounds]
make[1]: *** [ep_la-ep_engine.lo] Error 1
make[1]: Leaving directory `/var/lib/buildbot/ubuntu_9.04_x86_64/wallace_ubuntu_9.04_64/wallace/components/tmp/repo_ep-engine/ep-engine'
make: *** [all] Error 2
rake aborted!
ERROR: cmd failed: make
ERROR: with result: false, 512
/var/lib/buildbot/ubuntu_9.04_x86_64/wallace_ubuntu_9.04_64/wallace/Rakefile:162:in `call'