https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120243
--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> ---
a slightly modified testcase (without the lambda, so the dumps are easier to
read)
#include <coroutine>
struct coro {
struct promise_type {
promise_type() = default;
std::suspend_never initial_suspend() const noexcept {
__builtin_printf("initial_suspend\n");
return {};
}
std::suspend_never final_suspend() const noexcept { return {}; }
void unhandled_exception() {
__builtin_printf("unhandled_exception\n");
throw;
}
coro get_return_object() { return {}; }
void return_void() {}
};
};
coro
test ()
{
__builtin_printf("test\n");
throw "hello";
__builtin_abort();
co_return;
}
int main() {
coro C;
try {
C = test ();
}
catch(...) {
__builtin_printf("Caught!\n");
}
}
=======
This fails for O2 and passes for O1
The first difference in the dumps is in fixup_cfg3 and the difference is that
the actor function gets inlined into the ramp.
-fnoinline restores function.
GCC-14 does not seem to inline the same case.
.. next to figure out how the inlining is breaking the EH.
