https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61105
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #6)
> $ cat xx.cpp && /build/gcc-60760/gcc/xgcc -B /build/gcc-60760/gcc -S -Wall
> -Wextra -Wpedantic -o/dev/null xx.cpp
> constexpr void *operator new (__SIZE_TYPE__, void *p) noexcept { return p; }
>
> constexpr int f ()
> {
> int i = 0;
> int *p = new (&i) int (1);
> return *p;
> }
>
> constexpr int i = f ();
> $
The trunk rejects this with:
<source>:11:21: in 'constexpr' expansion of 'f()'
<source>:11:22: error: cast from 'void*' is not allowed
11 | constexpr int i = f ();
| ^
