>>>>> Gabriel Dos Reis writes: Gabriel> | AIX /usr/include/sys/atomic_op.h is not protected by extern "C" as it Gabriel> | should. I can fix this in libstdc++-v3/config/os/aix/atomicity.h. Gabriel> Please do that. More headers need to be protected, so changing atomicity.h does not work. This needs to be fixed in the parser. David