[head tinderbox] failure on amd64/amd64

TB --- 2013-07-12 10:20:16 - tinderbox 2.10 running on freebsd-current.sentex.ca
TB --- 2013-07-12 10:20:16 - FreeBSD freebsd-current.sentex.ca 8.3-PRERELEASE FreeBSD 8.3-PRERELEASE #0: Mon Mar 26 13:54:12 EDT 2012     des_at_freebsd-current.sentex.ca:/usr/obj/usr/src/sys/GENERIC  amd64
TB --- 2013-07-12 10:20:16 - starting HEAD tinderbox run for amd64/amd64
TB --- 2013-07-12 10:20:16 - cleaning the object tree
TB --- 2013-07-12 10:22:42 - /usr/local/bin/svn stat /src
TB --- 2013-07-12 10:22:46 - At svn revision 253259
TB --- 2013-07-12 10:22:47 - building world
TB --- 2013-07-12 10:22:47 - CROSS_BUILD_TESTING=YES
TB --- 2013-07-12 10:22:47 - MAKEOBJDIRPREFIX=/obj
TB --- 2013-07-12 10:22:47 - PATH=/usr/bin:/usr/sbin:/bin:/sbin
TB --- 2013-07-12 10:22:47 - SRCCONF=/dev/null
TB --- 2013-07-12 10:22:47 - TARGET=amd64
TB --- 2013-07-12 10:22:47 - TARGET_ARCH=amd64
TB --- 2013-07-12 10:22:47 - TZ=UTC
TB --- 2013-07-12 10:22:47 - __MAKE_CONF=/dev/null
TB --- 2013-07-12 10:22:47 - cd /src
TB --- 2013-07-12 10:22:47 - /usr/bin/make -B buildworld
>>> Building an up-to-date make(1)
>>> World build started on Fri Jul 12 10:22:53 UTC 2013
>>> Rebuilding the temporary build tree
>>> stage 1.1: legacy release compatibility shims
>>> stage 1.2: bootstrap tools
>>> stage 2.1: cleaning up the object tree
>>> stage 2.2: rebuilding the object tree
>>> stage 2.3: build tools
>>> stage 3: cross tools
>>> stage 4.1: building includes
>>> stage 4.2: building libraries
[...]
                                        ^~~~~~~~~~~~
/obj/amd64.amd64/src/tmp/usr/include/math.h:128:20: note: expanded from macro 'signbit'
#define signbit(x) __fp_type_select(x, __signbitf, __signbit, __signbitl)
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/obj/amd64.amd64/src/tmp/usr/include/math.h:91:2: note: expanded from macro '__fp_type_select'
        __builtin_types_compatible_p(__typeof(x), long double), ld(x),    \
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
6 errors generated.
*** Error code 1

Stop.
make: stopped in /src/gnu/lib/libstdc++
*** Error code 1

Stop.
make: stopped in /src/gnu/lib
*** Error code 1

Stop.
make: stopped in /src
*** Error code 1

Stop.
make: stopped in /src
*** Error code 1

Stop.
make: stopped in /src
*** Error code 1

Stop in /src.
TB --- 2013-07-12 11:49:45 - WARNING: /usr/bin/make returned exit code  1 
TB --- 2013-07-12 11:49:45 - ERROR: failed to build world
TB --- 2013-07-12 11:49:45 - 4351.96 user 686.09 system 5368.91 real


http://tinderbox.freebsd.org/tinderbox-head-build-HEAD-amd64-amd64.full