Merging upstream version 1.73.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 127 insertions, 35 deletions

diff --git a/tests/ui/lint/reference_casting.stderr b/tests/ui/lint/reference_casting.stderr
index d5b9bbef6..7ff9b76a8 100644
--- a/tests/ui/lint/reference_casting.stderr
+++ b/tests/ui/lint/reference_casting.stderr
@@ -1,68 +1,160 @@
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:20:9
+  --> $DIR/reference_casting.rs:19:16
    |
-LL |         (*(a as *const _ as *mut String)).push_str(" world");
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *(num as *const i32 as *mut i32);
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `#[deny(invalid_reference_casting)]` on by default
+
+error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:21:16
+   |
+LL |     let _num = &mut *(num as *const i32).cast_mut();
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:23:16
+   |
+LL |     let _num = &mut *std::ptr::from_ref(num).cast_mut();
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:25:16
    |
-note: the lint level is defined here
-  --> $DIR/reference_casting.rs:4:9
+LL |     let _num = &mut *std::ptr::from_ref({ num }).cast_mut();
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:27:16
    |
-LL | #![deny(invalid_reference_casting)]
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *{ std::ptr::from_ref(num) }.cast_mut();
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:22:9
+  --> $DIR/reference_casting.rs:29:16
    |
-LL |         *(a as *const _ as *mut _) = String::from("Replaced");
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *(std::ptr::from_ref({ num }) as *mut i32);
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:24:9
+  --> $DIR/reference_casting.rs:31:16
    |
-LL |         *(a as *const _ as *mut String) += " world";
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *(num as *const i32).cast::<i32>().cast_mut();
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:26:25
+  --> $DIR/reference_casting.rs:33:16
    |
-LL |         let _num = &mut *(num as *const i32 as *mut i32);
-   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *(num as *const i32).cast::<i32>().cast_mut().cast_const().cast_mut();
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:28:25
+  --> $DIR/reference_casting.rs:35:16
    |
-LL |         let _num = &mut *(num as *const i32).cast_mut();
-   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *(std::ptr::from_ref(static_u8()) as *mut i32);
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:30:20
+  --> $DIR/reference_casting.rs:37:16
    |
-LL |         let _num = *{ num as *const i32 }.cast_mut();
-   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *std::mem::transmute::<_, *mut i32>(num);
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:32:9
+  --> $DIR/reference_casting.rs:41:16
    |
-LL |         *std::ptr::from_ref(num).cast_mut() += 1;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let deferred = num as *const i32 as *mut i32;
+   |                    ----------------------------- casting happend here
+LL |     let _num = &mut *deferred;
+   |                ^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:34:9
+  --> $DIR/reference_casting.rs:44:16
    |
-LL |         *std::ptr::from_ref({ num }).cast_mut() += 1;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let deferred = (std::ptr::from_ref(num) as *const i32 as *const i32).cast_mut() as *mut i32;
+   |                    ---------------------------------------------------------------------------- casting happend here
+LL |     let _num = &mut *deferred;
+   |                ^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:36:9
+  --> $DIR/reference_casting.rs:46:16
    |
-LL |         *{ std::ptr::from_ref(num) }.cast_mut() += 1;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     let _num = &mut *(num as *const _ as usize as *mut i32);
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:38:9
+  --> $DIR/reference_casting.rs:50:9
+   |
+LL |         &mut *((this as *const _) as *mut _)
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:60:5
+   |
+LL |     *(a as *const _ as *mut _) = String::from("Replaced");
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:62:5
+   |
+LL |     *(a as *const _ as *mut String) += " world";
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:64:5
    |
-LL |         *(std::ptr::from_ref({ num }) as *mut i32) += 1;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     *std::ptr::from_ref(num).cast_mut() += 1;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:66:5
+   |
+LL |     *std::ptr::from_ref({ num }).cast_mut() += 1;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:68:5
+   |
+LL |     *{ std::ptr::from_ref(num) }.cast_mut() += 1;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:70:5
+   |
+LL |     *(std::ptr::from_ref({ num }) as *mut i32) += 1;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:72:5
+   |
+LL |     *std::mem::transmute::<_, *mut i32>(num) += 1;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:76:5
+   |
+LL |     let value = num as *const i32 as *mut i32;
+   |                 ----------------------------- casting happend here
+LL |     *value = 1;
+   |     ^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:78:5
+   |
+LL |     *(num as *const i32).cast::<i32>().cast_mut() = 2;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:80:5
+   |
+LL |     *(num as *const _ as usize as *mut i32) = 2;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:84:9
+   |
+LL |         *(this as *const _ as *mut _) = a;
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 10 previous errors
+error: aborting due to 25 previous errors