// EMIT_MIR_FOR_EACH_PANIC_STRATEGY

fn src(x: &&u8) -> bool {
    // CHECK-LABEL: fn src(
    // CHECK: debug y => [[Y:_.*]];
    // CHECK: bb0:
    // CHECK: [[BORROW_u8:_.*]] = copy (*_1);
    // CHECK: [[Y]] = copy (*[[BORROW_u8]]);
    // CHECK: bb1:
    // BORROW_u8 outside its lifetime in bb1.
    // CHECK-NOT: copy (*[[BORROW_u8]]);
    // CHECK: copy (*_1);
    // CHECK-NOT: _0 = const true;
    // CHECK: _0 = Eq({{.*}}, {{.*}});
    // CHECK-NOT: _0 = const true;
    let y = **x;
    unsafe { unknown() };
    **x == y
}

#[inline(never)]
unsafe fn unknown() {
    // CHECK-LABEL: fn unknown(
}

fn main() {
    // CHECK-LABEL: fn main(
    src(&&0);
}

// EMIT_MIR deref_nested_borrows.src.GVN.diff
// EMIT_MIR deref_nested_borrows.src.PreCodegen.after.mir