Allow unpredictable_function_pointer_comparisons lint in more places

library/core/src/task/wake.rs

@@ -104,6 +104,7 @@ impl RawWaker {
 /// synchronization. This is because [`LocalWaker`] is not thread safe itself, so it cannot
 /// be sent across threads.
 #[stable(feature = "futures_api", since = "1.36.0")]
+#[allow(unpredictable_function_pointer_comparisons)]
 #[derive(PartialEq, Copy, Clone, Debug)]
 pub struct RawWakerVTable {
     /// This function will be called when the [`RawWaker`] gets cloned, e.g. when

tests/ui/issues/issue-28561.rs

@@ -37,6 +37,7 @@ struct Array<T> {
 }
 
 #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
+#[allow(unpredictable_function_pointer_comparisons)]
 struct Fn<A, B, C, D, E, F, G, H, I, J, K, L> {
     f00: fn(),
     f01: fn(A),

tests/ui/mir/mir_refs_correct.rs

@@ -1,6 +1,8 @@
 //@ run-pass
 //@ aux-build:mir_external_refs.rs
 
+#![allow(unpredictable_function_pointer_comparisons)]
+
 extern crate mir_external_refs as ext;
 
 struct S(#[allow(dead_code)] u8);

tests/ui/nullable-pointer-iotareduction.rs

@@ -8,6 +8,8 @@
 // trying to get assert failure messages that at least identify which case
 // failed.
 
+#![allow(unpredictable_function_pointer_comparisons)]
+
 enum E<T> { Thing(isize, T), #[allow(dead_code)] Nothing((), ((), ()), [i8; 0]) }
 impl<T> E<T> {
     fn is_none(&self) -> bool {