Adjust tests for newly added unclear_fat_pointer_comparisons lint

Author: Urgau

library/alloc/tests/vec.rs

@@ -1933,7 +1933,7 @@ fn vec_macro_repeating_null_raw_fat_pointer() {
 
     let vec = vec![null_raw_dyn; 1];
     dbg!(ptr_metadata(vec[0]));
-    assert!(vec[0] == null_raw_dyn);
+    assert!(std::ptr::eq(vec[0], null_raw_dyn));
 
     // Polyfill for https://github.com/rust-lang/rfcs/pull/2580
 

src/tools/miri/tests/pass/pointers.rs

@@ -2,6 +2,7 @@
 //@[tree]compile-flags: -Zmiri-tree-borrows
 //@compile-flags: -Zmiri-permissive-provenance
 #![feature(ptr_metadata, const_raw_ptr_comparison)]
+#![allow(unclear_fat_pointer_comparisons)]
 
 use std::mem::{self, transmute};
 use std::ptr;

src/tools/miri/tests/pass/rc.rs

@@ -3,6 +3,7 @@
 //@compile-flags: -Zmiri-strict-provenance
 #![feature(new_uninit)]
 #![feature(get_mut_unchecked)]
+#![allow(unclear_fat_pointer_comparisons)]
 
 use std::cell::{Cell, RefCell};
 use std::fmt::Debug;

tests/ui/issues/issue-17336.rs

@@ -1,5 +1,8 @@
 // build-pass
+
 #![allow(unused_must_use)]
+#![allow(unclear_fat_pointer_comparisons)]
+
 #[allow(dead_code)]
 fn check(a: &str) {
     let x = a as *const str;

tests/ui/mir/mir_raw_fat_ptr.rs

@@ -1,7 +1,9 @@
 // run-pass
 // check raw fat pointer ops in mir
 // FIXME: please improve this when we get monomorphization support
+
 #![feature(raw_ref_op)]
+#![allow(unclear_fat_pointer_comparisons)]
 
 use std::mem;