Merge pull request 'Keep unsafe reference helpers internal' (#7) from iris-ai/iris:split/06-restrict-unsafe-utils into main

Reviewed-on: iris/iris#7

core/src/util/mod.rs

@@ -16,7 +16,7 @@ pub use id::*;
 pub use math::*;
 pub use refcount::*;
 pub use slot::*;
-pub use trust::*;
+pub(crate) use trust::*;
 pub use typemap::*;
 pub use vec2::*;
 

core/src/util/trust.rs

@@ -1,15 +1,15 @@
 #[allow(clippy::missing_safety_doc)]
-pub unsafe fn forget_ref<'a, T>(x: &T) -> &'a T {
+pub(crate) unsafe fn forget_ref<'a, T>(x: &T) -> &'a T {
     unsafe { std::mem::transmute::<&T, &T>(x) }
 }
 
 #[allow(clippy::missing_safety_doc)]
-pub unsafe fn forget_mut<'a, T>(x: &mut T) -> &'a mut T {
+pub(crate) unsafe fn forget_mut<'a, T>(x: &mut T) -> &'a mut T {
     unsafe { std::mem::transmute::<&mut T, &mut T>(x) }
 }
 
 #[allow(clippy::mut_from_ref, clippy::missing_safety_doc)]
-pub unsafe fn to_mut<T>(x: &T) -> &mut T {
+pub(crate) unsafe fn to_mut<T>(x: &T) -> &mut T {
     #[allow(mutable_transmutes)]
     unsafe {
         std::mem::transmute::<&T, &mut T>(x)