[Bug libstdc++/104019] Testsuite 17_intro/headers/c++2020/stdc++_multiple_inclusion.cc failures

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104019

--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:

https://gcc.gnu.org/g:5c1f274e3e090ee03bedc22dd7169b28e759974e

commit r12-6868-g5c1f274e3e090ee03bedc22dd7169b28e759974e
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Jan 25 10:22:42 2022 +0000

    libstdc++: Avoid some more warnings [PR104019]

    With -fno-exceptions we get a -Wmisleading-indentation warning for:

      if (cond)
        __try {}
        __catch (...) {}

    This is because the __catch(...) expands to if (false), but is indented
    as though it is controlled by the preceding 'if'. Surround it in braces.

    The new make_shared<T[]> code triggers a bogus warning due to PR 61596,
    which can be disabled with a pragma.

    libstdc++-v3/ChangeLog:

            PR libstdc++/104019
            * include/bits/istream.tcc (basic_istream::sentry): Add braces
            around try-block.
            * include/bits/shared_ptr_base.h (_Sp_counted_array_base::_M_init):
            Add pragmas to disable bogus warnings from PR 61596.