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From: "arthur.j.odwyer at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/114817] Wrong codegen for std::copy of "trivially
 copyable but not trivially assignable" type
Date: Tue, 23 Apr 2024 18:29:53 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114817

--- Comment #1 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
Yes, vector reallocation has analogous trouble with types that are "trivial,
but not trivially copy constructible."
https://godbolt.org/z/Psboqf3MP

(libc++ happens to sidestep this pitfall *on Clang 15+,* because libc++ gat=
es
their vector reallocation optimization differently depending on whether
`__has_builtin(__is_trivially_relocatable)`; but libc++ would have the same=
 bug
as libstdc++ when compiled on GCC.)=