[Bug testsuite/49375] New: Target libstdc++.so used by host cc1plus

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49375

           Summary: Target libstdc++.so used by host cc1plus
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com


When ppl is used, cc1plus may be linked against libppl.so,
which depends on host libstdc++.so.  When LD_LIBRARY_PATH
is set to target libstdc++.so to run C++ tests, target
libstdc++.so, which was just built and may be incompatible
with host libstdc++.so.  In my case, host libstdc++.so is
from GCC 4.6 and target libstdc++.so is from GCC 4.5. As
the result, all C++ tests failed.