Allow invalid_null_arguments in some tests

tests/ui/precondition-checks/copy-nonoverlapping.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: ptr::copy_nonoverlapping requires
 //@ revisions: null_src null_dst misaligned_src misaligned_dst overlapping
 
+#![allow(invalid_null_arguments)]
+
 use std::ptr;
 
 fn main() {

tests/ui/precondition-checks/copy.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: ptr::copy requires
 //@ revisions: null_src null_dst misaligned_src misaligned_dst
 
+#![allow(invalid_null_arguments)]
+
 use std::ptr;
 
 fn main() {

tests/ui/precondition-checks/read_volatile.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: ptr::read_volatile requires
 //@ revisions: null misaligned
 
+#![allow(invalid_null_arguments)]
+
 use std::ptr;
 
 fn main() {

tests/ui/precondition-checks/replace.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: ptr::replace requires
 //@ revisions: null misaligned
 
+#![allow(invalid_null_arguments)]
+
 use std::ptr;
 
 fn main() {

tests/ui/precondition-checks/slice-from-raw-parts-mut.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: slice::from_raw_parts_mut requires
 //@ revisions: null misaligned toolarge
 
+#![allow(invalid_null_arguments)]
+
 fn main() {
     unsafe {
         #[cfg(null)]

tests/ui/precondition-checks/slice-from-raw-parts.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: slice::from_raw_parts requires
 //@ revisions: null misaligned toolarge
 
+#![allow(invalid_null_arguments)]
+
 fn main() {
     unsafe {
         #[cfg(null)]

tests/ui/precondition-checks/swap-nonoverlapping.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: ptr::swap_nonoverlapping requires
 //@ revisions: null_src null_dst misaligned_src misaligned_dst overlapping
 
+#![allow(invalid_null_arguments)]
+
 use std::ptr;
 
 fn main() {

tests/ui/precondition-checks/write_volatile.rs

@@ -3,6 +3,8 @@
 //@ error-pattern: unsafe precondition(s) violated: ptr::write_volatile requires
 //@ revisions: null misaligned
 
+#![allow(invalid_null_arguments)]
+
 use std::ptr;
 
 fn main() {

tests/ui/precondition-checks/zero-size-null.rs

@@ -7,8 +7,10 @@ use std::ptr;
 
 fn main() {
     unsafe {
+        #[expect(invalid_null_arguments)] // false-positive, copy of 0
         ptr::copy_nonoverlapping::<u8>(ptr::null(), ptr::null_mut(), 0);
         ptr::copy_nonoverlapping::<()>(ptr::null(), ptr::null_mut(), 123);
+        #[expect(invalid_null_arguments)] // false-positive, copy of 0
         ptr::copy::<u8>(ptr::null(), ptr::null_mut(), 0);
         ptr::copy::<()>(ptr::null(), ptr::null_mut(), 123);
         ptr::swap::<()>(ptr::null_mut(), ptr::null_mut());