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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/111842] Unable to disable conversion warning in case of
 _Float16
Date: Tue, 17 Oct 2023 04:45:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111842

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to n.deshmukh@samsung.com from comment #7)
>=20
> Is there a reason why the second error is not categorized under
> -Wfloat-conversion diagnostic?

Did you read what I linked?
I will link it again:
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1467r4.html#impli=
cit

It even mentions why things won't change.
Again the code:
```
float a;
_Float16 b =3D a;
```
is invalid C++ code as defined by that paper (which was addopted for C++23).
While:
```
double a;
float b =3D a;
```
is still valid even.=