1 error[E0080]: it is undefined behavior to use this value
4 LL | const UNALIGNED: &u16 = unsafe { mem::transmute(&[0u8; 4]) };
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered unaligned reference (required 2 byte alignment but found 1)
7 = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior
9 error[E0080]: it is undefined behavior to use this value
10 --> $DIR/ub-ref.rs:11:1
12 LL | const NULL: &u16 = unsafe { mem::transmute(0usize) };
13 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered 0, but expected something greater or equal to 1
15 = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior
17 error[E0080]: it is undefined behavior to use this value
18 --> $DIR/ub-ref.rs:14:1
20 LL | const REF_AS_USIZE: usize = unsafe { mem::transmute(&0) };
21 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered a pointer, but expected initialized plain (non-pointer) bytes
23 = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior
25 error[E0080]: it is undefined behavior to use this value
26 --> $DIR/ub-ref.rs:17:1
28 LL | const REF_AS_USIZE_SLICE: &[usize] = &[unsafe { mem::transmute(&0) }];
29 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered a pointer at .<deref>, but expected plain (non-pointer) bytes
31 = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior
33 error[E0080]: it is undefined behavior to use this value
34 --> $DIR/ub-ref.rs:20:1
36 LL | const USIZE_AS_REF: &'static u8 = unsafe { mem::transmute(1337usize) };
37 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered integer pointer in non-ZST reference
39 = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rust compiler repository if you believe it should not be considered undefined behavior
41 error: aborting due to 5 previous errors
43 For more information about this error, try `rustc --explain E0080`.