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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 [thread overview] Message-ID: <bug-108476-4-SUTJPCmJG6@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-108476-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108476 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 function in C++ is undefined behavior, in C it is not, in C it is only UB if the caller 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 about warnings.
next prev parent reply other threads:[~2023-01-20 10:13 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-01-20 7:08 [Bug c/108476] New: " alexhenrie24 at gmail dot com 2023-01-20 7:23 ` [Bug c/108476] " pinskia at gcc dot gnu.org 2023-01-20 8:32 ` rguenth at gcc dot gnu.org 2023-01-20 10:13 ` jakub at gcc dot gnu.org [this message] 2023-01-23 16:40 ` alexhenrie24 at gmail dot com 2023-12-01 7:18 ` fw at gcc dot gnu.org 2024-01-12 13:43 ` xry111 at gcc dot gnu.org
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