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From: "chrisj at rtems dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/105880] eh_globals_init destructor not setting
 _M_init to false
Date: Wed, 08 Jun 2022 06:00:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105880

--- Comment #4 from Chris Johns <chrisj at rtems dot org> ---
(In reply to Andrew Pinski from comment #3)
> Sounds like the order of deconstructors is wrong.
> Where is __cxxabiv1::__cxa_get_globals being called from that is the prob=
lem?

The `std::ios_base::Init::~Init()` is being called after this object has
destructed.

The ios_base class uses a sentry to check the state. The code in it's
destructor is:

if (bool(_M_os.flags() & ios_base::unitbuf) && !uncaught_exception())=20=20

The std::cerr object has ios_base::unitbuf set so uncaught_exception() is
called. This call gets the cxa globals:

__cxa_eh_globals *globals =3D __cxa_get_globals ();=