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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/44952] #include <iostream> implies global
 constructor.
Date: Thu, 03 Nov 2022 14:38:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D44952

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-11-03
                 CC|                            |jason at gcc dot gnu.org,
                   |                            |ppalka at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW

--- Comment #17 from Jason Merrill <jason at gcc dot gnu.org> ---
The __ioinit hack won't work with the move to modules, and it doesn't seem
necessary either:

For programs that use libstdc++ as a shared library, it should be fine for =
the
initialization to run in the library, before the main program is loaded.

For programs that use a static libstdc++, attribute init_priority should be
sufficient to make sure it runs first.=