https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119383
Kacper Słomiński <kacper.slominski72 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kacper.slominski72 at gmail
dot co
| |m
--- Comment #6 from Kacper Słomiński <kacper.slominski72 at gmail dot com> ---
I have reduced one of the failing test cases from the boost test suite to the
following code:
struct base {
virtual base *clone() const = 0;
~base() { }
};
struct impl : virtual base {
base *clone() const { return new impl; }
};
const base *make_a_clone() {
const base &base = impl{};
return base.clone();
}
int main() {
make_a_clone();
}
Compiled with `-O0 -Wall -Wextra -Wpedantic -g` with no warnings.
Comparing the disassembly of the binary produced by GCC 14 and 15, it seems the
lifetime of the temporary `impl` object is not correctly extended to the
lifetime of the reference, and it gets immediately deconstructed after being
constructed.
