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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/104559] vector<bool> v; v.insert(v.begin());
 compiles, but it shouldn't
Date: Wed, 16 Feb 2022 09:32:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104559

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-02-16
           Keywords|                            |accepts-invalid

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Arthur O'Dwyer from comment #0)
> Somehow libstdc++ believes that `vector<bool>::insert(_Bit_const_referenc=
e)`
> should work.=20

?

That's not what your example does.

I'll try to do some archaeology for the default argument tomorrow and see w=
hy
we have it.=