[Bug libstdc++/62258] [4.8/4.9/5/6 Regression] uncaught_exception() equals to `true' after rethrow_exception()

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62258

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk so far