On Mon, Jul 04, 2022 at 12:34:08PM +0000, Christophe Leroy wrote: > Le 04/07/2022 à 13:45, Peter Zijlstra a écrit : > > I'm somewhat confused; how is an empty STT_FUNC a valid construct on > > Power? > > So am I. It is likely not a valid construct, but that's what GCC seems > to generate when you call annotate_unreachable().
It is a valid construct on (almost) all targets. If the user chooses to have executable code terminate in limbo, that is what the compiler will do (and this can result in a code symbol with size 0). Compare this to data symbols with no size, the situation is quite similar. Segher
