[Bug libstdc++/54448] New: many failures with /sbin/loader: Error: libstdc++.so.6: symbol "__pthread_mutex_init" unresolved

["htl10 at users dot sourceforge.net" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54448

             Bug #: 54448
           Summary: many failures with /sbin/loader: Error:
                    libstdc++.so.6: symbol "__pthread_mutex_init"
                    unresolved
    Classification: Unclassified
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: htl10@users.sourceforge.net


Am running 4.7.1 testsuite on alphaev68-dec-osf5.1a,
and seeing a lot of 

237556:./what-1.exe: /sbin/loader: Error: libstdc++.so.6: symbol
"__pthread_mutex_init" unresolved
237556:./what-1.exe: /sbin/loader: Fatal Error: Load of "./what-1.exe" failed:
Unresolved symbol name
FAIL: 27_io/ios_base/failure/what-1.cc execution test

about __pthread_mutex_init being unresolved.

The previous testsuite result I summitted
(http://gcc.gnu.org/ml/gcc-testresults/2011-08/msg00587.html) also seems to
have a lot of unexpected failures for 4.6.1:

        === libstdc++ Summary ===

# of expected passes        4091
# of unexpected failures    2312
# of expected failures        80
# of unsupported tests        747
        === g++ tests ===

I'll write again when 4.7.1. finishes.