[Bug bootstrap/17364] New: c99 designators in nptl <pthreads.h> break libstdc++

["rth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

If NPTL is installed as the system pthreads, we have 

# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
  { .__data = { .__kind = PTHREAD_MUTEX_RECURSIVE_NP } }

which cannot be handled by the C++ parser, and so we die
building libstdc++-v3/libsupc++/guard.cc.

The quickest fix might be to always use runtime initialization
of recursive mutexes for pthreads.  Long term, of course, it 
would be nice to support full c99 designated initializers in C++.

-- 
           Summary: c99 designators in nptl <pthreads.h> break libstdc++
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rth at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,jason at gcc dot gnu dot
                    org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17364