From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id F3C9D3858415; Wed, 6 Oct 2021 10:40:11 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F3C9D3858415 From: "m.cencora at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/93059] char and char8_t does not talk with each other with memcpy. std::copy std::copy_n, std::fill, std::fill_n, std::uninitialized_copy std::uninitialized_copy_n, std::fill, std::uninitialized_fill_n fails to convert to memxxx functions Date: Wed, 06 Oct 2021 10:40:11 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Version: 10.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: m.cencora at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Oct 2021 10:40:12 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D93059 m.cencora at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |m.cencora at gmail dot com --- Comment #48 from m.cencora at gmail dot com --- Any progress on this? I have stumbled upon same inefficiencies when writing serialization code th= at copies raw bytes to unsigned char* raw memory buffer from contiguous contai= ners (string/vector/array) with elements of any 1 byte trivially copyable type (signed char, char, enum, UDT).=