https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103920
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Also consider void f1 (const S s, S * __restrict q); where obeying the warning would create a false alias when called as f1 (x, &x); whether passing by value or reference is more efficient also depends on the context - if the aggregate doesn't live in memory at (all) callers and register passing conventions are in effect then passing by reference requires materializing the argument on the stack.
