[Bug bootstrap/50982] gthr reorganization breakage

[ro at CeBiTec dot Uni-Bielefeld.DE]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50982

--- Comment #19 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2011-11-04 16:30:57 UTC ---
> The incorrect version of atomic.ii includes more code, but nothing specific to
> pthread_once_t.  I still am trying to understand the nesting, but is an extern
> "C++" statement resetting the mode that was not occurring before?

I think it does: it has the once_flag() initialization that fails to
compile.  This is from libstdc++-v3/include/std/mutex, controlled by 

#if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)

How are those macros defined in <target>/libstdc++-v3/config.h before
and after my patches?

That's why I regularly ask for -g3 -save-temps output; this way, the
macro definitions are kept in the preprocessed output and you can see
this for yourself.

    Rainer