GCC 4.7.0 and C++ atomics

[Sebastian Huber <sebastian dot huber at embedded-brains dot de>]

Hello,

I run the GCC testsuite for GCC 4.7.0 20120307

http://gcc.gnu.org/ml/gcc-testresults/2012-03/msg00782.html

I got a lot of errors like this:

FAIL: g++.dg/simulate-thread/atomics-1.C  -O0 -g  (test for excess errors)
148796 Excess errors:
148797 
/home/sh/rtems-testing/gcc/b-arm-gcc/arm-rtemseabi4.11/libstdc++-v3/include/bits/atomic_base.h:458: 
undefined reference to `__sync_synchronize'
148798 
/home/sh/rtems-testing/gcc/b-arm-gcc/arm-rtemseabi4.11/libstdc++-v3/include/bits/atomic_base.h:458: 
undefined reference to `__sync_synchronize'
148799 
/home/sh/rtems-testing/gcc/b-arm-gcc/arm-rtemseabi4.11/libstdc++-v3/include/bits/atomic_base.h:458: 
undefined reference to `__sync_synchronize'
148800 
/home/sh/rtems-testing/gcc/b-arm-gcc/arm-rtemseabi4.11/libstdc++-v3/include/bits/atomic_base.h:458: 
undefined reference to `__sync_synchronize'
148801 
/home/sh/rtems-testing/gcc/b-arm-gcc/arm-rtemseabi4.11/libstdc++-v3/include/bits/atomic_base.h:438: 
undefined reference to `__sync_synchronize'
148802 
/tmp/ccgSyPe7.o:/home/sh/rtems-testing/gcc/b-arm-gcc/arm-rtemseabi4.11/libstdc++-v3/include/bits/atomic_base.h:438: 
more undefined references to `__sync_synchronize' follow

Who is supposed to provide this function?

--
Sebastian Huber, embedded brains GmbH

Address : Obere Lagerstr. 30, D-82178 Puchheim, Germany
Phone   : +49 89 18 90 80 79-6
Fax     : +49 89 18 90 80 79-9
E-Mail  : sebastian.huber@embedded-brains.de
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