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From: "richard-gccbugzilla at metafoo dot co.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/94295] use __builtin_operator_new and
 __builtin_operator_delete when available
Date: Tue, 24 Mar 2020 21:04:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94295

--- Comment #4 from Richard Smith <richard-gccbugzilla at metafoo dot co.uk=
> ---
(In reply to Andrew Pinski from comment #3)
> PR 23383 is where part of the discussion was done.
>=20
> In fact GCC implements the optimization without the builtin:
> https://gcc.gnu.org/legacy-ml/gcc-patches/2019-07/msg00136.html

Yep, looks like GCC miscompiles direct calls to operator new / operator del=
ete
since that patch landed: https://godbolt.org/z/dK99Rz=