[Bug c++/92467] gcc miscompiles ternary expression with omitted first operand ?: involving C++ prvalues

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92467

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://gcc.gnu.org/onlinedocs/gcc-9.2.0/gcc/Conditionals.html#Conditionals

If I understand the extension correctly, we have:
({
auto &tmp = get1();
(tmp ? tmp: get2()).release();
})


This means the tmp variable goes out of the scope after the ?: statement ends.