1 error: Undefined Behavior: `ptr_offset_from_unsigned` called when first pointer has smaller offset than second: 0 < 4
2 --> $DIR/ptr_offset_from_unsigned_neg.rs:LL:CC
4 LL | let _val = unsafe { ptr1.sub_ptr(ptr2) };
5 | ^^^^^^^^^^^^^^^^^^ `ptr_offset_from_unsigned` called when first pointer has smaller offset than second: 0 < 4
7 = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
8 = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information
10 = note: inside `main` at $DIR/ptr_offset_from_unsigned_neg.rs:LL:CC
12 note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
14 error: aborting due to previous error