error[E0606]: casting `*const U` as `*const V` is invalid
  --> $DIR/cast-rfc0401.rs:3:5
   |
LL |     u as *const V
   |     ^^^^^^^^^^^^^
   |
   = note: vtable kinds may not match

error[E0606]: casting `*const U` as `*const str` is invalid
  --> $DIR/cast-rfc0401.rs:8:5
   |
LL |     u as *const str
   |     ^^^^^^^^^^^^^^^
   |
   = note: vtable kinds may not match

error[E0609]: no field `f` on type `fn() {main}`
  --> $DIR/cast-rfc0401.rs:65:18
   |
LL |     let _ = main.f as *const u32;
   |                  ^

error[E0605]: non-primitive cast: `*const u8` as `&u8`
  --> $DIR/cast-rfc0401.rs:29:13
   |
LL |     let _ = v as &u8;
   |             ^^^^^^^^
   |
   = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait

error[E0605]: non-primitive cast: `*const u8` as `E`
  --> $DIR/cast-rfc0401.rs:30:13
   |
LL |     let _ = v as E;
   |             ^^^^^^
   |
   = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait

error[E0605]: non-primitive cast: `*const u8` as `fn()`
  --> $DIR/cast-rfc0401.rs:31:13
   |
LL |     let _ = v as fn();
   |             ^^^^^^^^^
   |
   = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait

error[E0605]: non-primitive cast: `*const u8` as `(u32,)`
  --> $DIR/cast-rfc0401.rs:32:13
   |
LL |     let _ = v as (u32,);
   |             ^^^^^^^^^^^
   |
   = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait

error[E0605]: non-primitive cast: `std::option::Option<&*const u8>` as `*const u8`
  --> $DIR/cast-rfc0401.rs:33:13
   |
LL |     let _ = Some(&v) as *const u8;
   |             ^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait

error[E0606]: casting `*const u8` as `f32` is invalid
  --> $DIR/cast-rfc0401.rs:35:13
   |
LL |     let _ = v as f32;
   |             ^^^^^^^^

error[E0606]: casting `fn() {main}` as `f64` is invalid
  --> $DIR/cast-rfc0401.rs:36:13
   |
LL |     let _ = main as f64;
   |             ^^^^^^^^^^^

error[E0606]: casting `&*const u8` as `usize` is invalid
  --> $DIR/cast-rfc0401.rs:37:13
   |
LL |     let _ = &v as usize;
   |             ^^^^^^^^^^^
   |
   = help: cast through a raw pointer first

error[E0606]: casting `f32` as `*const u8` is invalid
  --> $DIR/cast-rfc0401.rs:38:13
   |
LL |     let _ = f as *const u8;
   |             ^^^^^^^^^^^^^^

error[E0054]: cannot cast as `bool`
  --> $DIR/cast-rfc0401.rs:39:13
   |
LL |     let _ = 3_i32 as bool;
   |             ^^^^^^^^^^^^^ help: compare with zero instead: `3_i32 != 0`

error[E0054]: cannot cast as `bool`
  --> $DIR/cast-rfc0401.rs:40:13
   |
LL |     let _ = E::A as bool;
   |             ^^^^^^^^^^^^ unsupported cast

error[E0604]: only `u8` can be cast as `char`, not `u32`
  --> $DIR/cast-rfc0401.rs:41:13
   |
LL |     let _ = 0x61u32 as char;
   |             ^^^^^^^^^^^^^^^

error[E0606]: casting `bool` as `f32` is invalid
  --> $DIR/cast-rfc0401.rs:43:13
   |
LL |     let _ = false as f32;
   |             ^^^^^^^^^^^^
   |
   = help: cast through an integer first

error[E0606]: casting `E` as `f32` is invalid
  --> $DIR/cast-rfc0401.rs:44:13
   |
LL |     let _ = E::A as f32;
   |             ^^^^^^^^^^^
   |
   = help: cast through an integer first

error[E0606]: casting `char` as `f32` is invalid
  --> $DIR/cast-rfc0401.rs:45:13
   |
LL |     let _ = 'a' as f32;
   |             ^^^^^^^^^^
   |
   = help: cast through an integer first

error[E0606]: casting `bool` as `*const u8` is invalid
  --> $DIR/cast-rfc0401.rs:47:13
   |
LL |     let _ = false as *const u8;
   |             ^^^^^^^^^^^^^^^^^^

error[E0606]: casting `E` as `*const u8` is invalid
  --> $DIR/cast-rfc0401.rs:48:13
   |
LL |     let _ = E::A as *const u8;
   |             ^^^^^^^^^^^^^^^^^

error[E0606]: casting `char` as `*const u8` is invalid
  --> $DIR/cast-rfc0401.rs:49:13
   |
LL |     let _ = 'a' as *const u8;
   |             ^^^^^^^^^^^^^^^^

error[E0606]: casting `usize` as `*const [u8]` is invalid
  --> $DIR/cast-rfc0401.rs:51:13
   |
LL |     let _ = 42usize as *const [u8];
   |             ^^^^^^^^^^^^^^^^^^^^^^

error[E0607]: cannot cast thin pointer `*const u8` to fat pointer `*const [u8]`
  --> $DIR/cast-rfc0401.rs:52:13
   |
LL |     let _ = v as *const [u8];
   |             ^^^^^^^^^^^^^^^^

error[E0606]: casting `&dyn Foo` as `*const str` is invalid
  --> $DIR/cast-rfc0401.rs:54:13
   |
LL |     let _ = foo as *const str;
   |             ^^^^^^^^^^^^^^^^^

error[E0606]: casting `&dyn Foo` as `*mut str` is invalid
  --> $DIR/cast-rfc0401.rs:55:13
   |
LL |     let _ = foo as *mut str;
   |             ^^^^^^^^^^^^^^^

error[E0606]: casting `fn() {main}` as `*mut str` is invalid
  --> $DIR/cast-rfc0401.rs:56:13
   |
LL |     let _ = main as *mut str;
   |             ^^^^^^^^^^^^^^^^

error[E0606]: casting `&f32` as `*mut f32` is invalid
  --> $DIR/cast-rfc0401.rs:57:13
   |
LL |     let _ = &f as *mut f32;
   |             ^^^^^^^^^^^^^^

error[E0606]: casting `&f32` as `*const f64` is invalid
  --> $DIR/cast-rfc0401.rs:58:13
   |
LL |     let _ = &f as *const f64;
   |             ^^^^^^^^^^^^^^^^

error[E0606]: casting `*const [i8]` as `usize` is invalid
  --> $DIR/cast-rfc0401.rs:59:13
   |
LL |     let _ = fat_sv as usize;
   |             ^^^^^^^^^^^^^^^
   |
   = help: cast through a thin pointer first

error[E0606]: casting `*const dyn Foo` as `*const [u16]` is invalid
  --> $DIR/cast-rfc0401.rs:68:13
   |
LL |     let _ = cf as *const [u16];
   |             ^^^^^^^^^^^^^^^^^^
   |
   = note: vtable kinds may not match

error[E0606]: casting `*const dyn Foo` as `*const dyn Bar` is invalid
  --> $DIR/cast-rfc0401.rs:69:13
   |
LL |     let _ = cf as *const dyn Bar;
   |             ^^^^^^^^^^^^^^^^^^^^
   |
   = note: vtable kinds may not match

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
  --> $DIR/cast-rfc0401.rs:53:13
   |
LL |     let _ = fat_v as *const dyn Foo;
   |             ^^^^^ doesn't have a size known at compile-time
   |
   = help: the trait `std::marker::Sized` is not implemented for `[u8]`
   = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
   = note: required for the cast to the object type `dyn Foo`

error[E0277]: the size for values of type `str` cannot be known at compilation time
  --> $DIR/cast-rfc0401.rs:62:13
   |
LL |     let _ = a as *const dyn Foo;
   |             ^ doesn't have a size known at compile-time
   |
   = help: the trait `std::marker::Sized` is not implemented for `str`
   = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
   = note: required for the cast to the object type `dyn Foo`

error[E0606]: casting `&{float}` as `f32` is invalid
  --> $DIR/cast-rfc0401.rs:71:30
   |
LL |     vec![0.0].iter().map(|s| s as f32).collect::<Vec<f32>>();
   |                              -^^^^^^^
   |                              |
   |                              cannot cast `&{float}` as `f32`
   |                              help: dereference the expression: `*s`

error: aborting due to 34 previous errors

Some errors have detailed explanations: E0054, E0277, E0604, E0605, E0606, E0607, E0609.
For more information about an error, try `rustc --explain E0054`.