re PR libstdc++/10606 (uncaught_exception() returns false too early)

re PR libstdc++/10606 (uncaught_exception() returns false too early)

        PR libstdc++/10606
gcc/cp/
        * except.c (do_get_exception_ptr): New.
        (expand_start_catch_block): Use it.
libstdc++/
        * config/linker-map.gnu (CXXABI_1.3.1): Add __cxa_get_exception_ptr.
        * libsupc++/eh_alloc.cc (__cxa_allocate_exception): Increment
        uncaughtExceptions here instead of ...
        * libsupc++/eh_throw.cc (__cxa_throw) ... here.
        (__cxa_rethrow): Increment uncaughtExceptions here instead of ...
        * libsupc++/eh_catch.cc (__cxa_end_catch): ... here.
        (__cxa_get_exception_ptr): New.
        * libsupc++/unwind-cxx.h (__cxa_get_exception_ptr): Declare.

From-SVN: r95262