https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110819
Xi Ruoyao <xry111 at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |xry111 at gcc dot gnu.org
--- Comment #3 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to AK from comment #2)
> > When compiled with clang, libstdc++'s std::vector uses
> > __builtin_operator_new which always has the -fassume-sane-operator-new
> > semantics, and so can be optimized.
>
> yes clang optimizes with libstdc++ as well. what can be done in gcc for it
> to detect that the new+delete pair can be optimized away?
Basically we'll need __builtin_operator_new. See all the "see also" links.
