From: Xi Ruoyao <xry111@mengyan1223.wang>
To: Matthias Kretz <m.kretz@gsi.de>,
gcc-patches@gcc.gnu.org, libstdc++@gcc.gnu.org
Subject: Re: [PATCH] libstdc++: Implement std::unreachable() for C++23 (P0627R6)
Date: Thu, 31 Mar 2022 23:59:26 +0800 [thread overview]
Message-ID: <cd25bf28f13ab3fd438fbce1d3357939b637813e.camel@mengyan1223.wang> (raw)
In-Reply-To: <3572914.e9J7NaK4W3@minbar>
On Thu, 2022-03-31 at 17:50 +0200, Matthias Kretz via Gcc-patches wrote:
> I like it. But I'd like it even more if we could have
>
> #elif defined _UBSAN
> __ubsan_invoke_ub("reached std::unreachable()");
>
> But to my knowledge UBSAN has no hooks for the library like this
> (yet).
UBSAN can catch __builtin_unreachable() and print a message "execution
reached an unreachable program point".
--
Xi Ruoyao <xry111@mengyan1223.wang>
School of Aerospace Science and Technology, Xidian University
next prev parent reply other threads:[~2022-03-31 15:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-31 15:30 Jonathan Wakely
2022-03-31 15:50 ` Matthias Kretz
2022-03-31 15:59 ` Xi Ruoyao [this message]
2022-03-31 16:01 ` Marc Glisse
2022-03-31 16:05 ` Jonathan Wakely
2022-03-31 18:21 ` Marc Glisse
2022-04-01 11:33 ` Jonathan Wakely
2022-04-01 11:56 ` Matthias Kretz
2022-04-01 13:01 ` Jonathan Wakely
2022-03-31 16:02 ` Jonathan Wakely
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