https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104177
David Ledger <davidledger at live dot com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |davidledger at live dot com.au --- Comment #15 from David Ledger <davidledger at live dot com.au> --- This is a complete minimum reproduction, just to aid Iain Sandoe: ```CPP #include <coroutine> using namespace std; #include <cstddef> static char buffer[4]; template <typename a> struct b { struct promise_type { void *operator new(size_t) { return &buffer[3]; } void get_return_object(); void unhandled_exception(); suspend_always initial_suspend(); suspend_always final_suspend() noexcept; suspend_always yield_value(a); }; }; b<max_align_t *> c() { max_align_t buffer[1]; for (auto d : buffer) co_yield &d; } ```