diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/ui/lint/reference_casting.rs | 11 | ||||
| -rw-r--r-- | tests/ui/lint/reference_casting.stderr | 47 |
2 files changed, 53 insertions, 5 deletions
diff --git a/tests/ui/lint/reference_casting.rs b/tests/ui/lint/reference_casting.rs index 6c38bca3daa..92d985948ec 100644 --- a/tests/ui/lint/reference_casting.rs +++ b/tests/ui/lint/reference_casting.rs @@ -71,6 +71,11 @@ unsafe fn assign_to_ref() { //~^ ERROR assigning to `&T` is undefined behavior *std::mem::transmute::<_, *mut i32>(num) += 1; //~^ ERROR assigning to `&T` is undefined behavior + std::ptr::write( + //~^ ERROR assigning to `&T` is undefined behavior + std::mem::transmute::<*const i32, *mut i32>(num), + -1i32, + ); let value = num as *const i32 as *mut i32; *value = 1; @@ -79,6 +84,12 @@ unsafe fn assign_to_ref() { //~^ ERROR assigning to `&T` is undefined behavior *(num as *const _ as usize as *mut i32) = 2; //~^ ERROR assigning to `&T` is undefined behavior + std::ptr::write(value, 2); + //~^ ERROR assigning to `&T` is undefined behavior + std::ptr::write_unaligned(value, 2); + //~^ ERROR assigning to `&T` is undefined behavior + std::ptr::write_volatile(value, 2); + //~^ ERROR assigning to `&T` is undefined behavior unsafe fn generic_assign_to_ref<T>(this: &T, a: T) { *(this as *const _ as *mut _) = a; diff --git a/tests/ui/lint/reference_casting.stderr b/tests/ui/lint/reference_casting.stderr index 7ff9b76a85e..c1589f13835 100644 --- a/tests/ui/lint/reference_casting.stderr +++ b/tests/ui/lint/reference_casting.stderr @@ -131,7 +131,17 @@ 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 + --> $DIR/reference_casting.rs:74:5 + | +LL | / std::ptr::write( +LL | | +LL | | std::mem::transmute::<*const i32, *mut i32>(num), +LL | | -1i32, +LL | | ); + | |_____^ + +error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell` + --> $DIR/reference_casting.rs:81:5 | LL | let value = num as *const i32 as *mut i32; | ----------------------------- casting happend here @@ -139,22 +149,49 @@ LL | *value = 1; | ^^^^^^^^^^ error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell` - --> $DIR/reference_casting.rs:78:5 + --> $DIR/reference_casting.rs:83:5 | 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 + --> $DIR/reference_casting.rs:85:5 | 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 + --> $DIR/reference_casting.rs:87:5 + | +LL | let value = num as *const i32 as *mut i32; + | ----------------------------- casting happend here +... +LL | std::ptr::write(value, 2); + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell` + --> $DIR/reference_casting.rs:89:5 + | +LL | let value = num as *const i32 as *mut i32; + | ----------------------------- casting happend here +... +LL | std::ptr::write_unaligned(value, 2); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell` + --> $DIR/reference_casting.rs:91:5 + | +LL | let value = num as *const i32 as *mut i32; + | ----------------------------- casting happend here +... +LL | std::ptr::write_volatile(value, 2); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell` + --> $DIR/reference_casting.rs:95:9 | LL | *(this as *const _ as *mut _) = a; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 25 previous errors +error: aborting due to 29 previous errors |