In what situation fn() doesn't mean fn(void) under C23?
None, but that is not my point. Before C23, fn() already meant the same thing as fn(void) in function definitions, which the situation under discussion here.
C23 changed what fn() means outside a function definition.
None, but that is not my point. Before C23, fn() already meant the same thing as fn(void) in function definitions, which the situation under discussion here.
C23 changed what fn() means outside a function definition.