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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/108476] Please turn -Wreturn-type on by default for C
Date: Fri, 20 Jan 2023 10:13:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108476

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The reason it is enabled by default for C++ is that the 2 languages differ
significantly in this regard.  Falling through the end of a non-void functi=
on
in C++ is undefined behavior, in C it is not, in C it is only UB if the cal=
ler
actually uses the uninitialized return value (which is much harder to warn
about).
And in C it is enabled in -Wall, which you should use anyway if you care ab=
out
warnings.=