https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83292
--- Comment #3 from Andrew Church <achurch+gcc at achurch dot org> --- I use __builtin_return(__builtin_apply(...)) in library function wrappers for failure injection in tests, so that I don't need to explicitly write out all the arguments multiple times for each wrapped function. As such, I don't need the full functionality of __builtin_apply() in being able to save and later return an arbitrary value, but it would be useful to have an equivalent to the combination __builtin_return(__builtin_apply(...)) -- perhaps something which restored the register/stack state to that at function entry and jumped to the target function (e.g., jmp *%eax/rax on x86).
