| //@revisions: stack tree |
| //@[tree]compile-flags: -Zmiri-tree-borrows |
| |
| // A callee may not write to the destination of our `&mut` without us noticing. |
| |
| fn main() { |
| let mut x = 15; |
| let xraw = &mut x as *mut _; |
| // Derived from raw value, so using raw value is still ok ... |
| let xref = unsafe { &mut *xraw }; |
| callee(xraw); |
| // ... though any use of raw value will invalidate our ref. |
| let _val = *xref; |
| //~[stack]^ ERROR: /read access .* tag does not exist in the borrow stack/ |
| //~[tree]| ERROR: /read access through .* is forbidden/ |
| } |
| |
| fn callee(xraw: *mut i32) { |
| unsafe { *xraw = 15 }; |
| } |
