29 lines
1.4 KiB
Plaintext
29 lines
1.4 KiB
Plaintext
error: Undefined Behavior: attempting a read access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
|
|
--> $DIR/illegal_read4.rs:LL:CC
|
|
|
|
|
LL | let _illegal = *xref2;
|
|
| ^^^^^^
|
|
| |
|
|
| attempting a read access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
|
|
| this error occurs as part of an access at ALLOC[0x0..0x4]
|
|
|
|
|
= help: this indicates a potential bug in the program: it performed an invalid operation, but the Stacked Borrows rules it violated are still experimental
|
|
= help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/stacked-borrows.md for further information
|
|
help: <TAG> was created by a retag at offsets [0x0..0x4]
|
|
--> $DIR/illegal_read4.rs:LL:CC
|
|
|
|
|
LL | let xref2 = unsafe { &mut *xraw };
|
|
| ^^^^^^^^^^
|
|
help: <TAG> was later invalidated at offsets [0x0..0x4]
|
|
--> $DIR/illegal_read4.rs:LL:CC
|
|
|
|
|
LL | let _val = unsafe { *xraw }; // use the raw again, this invalidates xref2 *even* with the special read except for uniq refs
|
|
| ^^^^^
|
|
= note: backtrace:
|
|
= note: inside `main` at $DIR/illegal_read4.rs:LL:CC
|
|
|
|
note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
|
|
|
|
error: aborting due to previous error
|
|
|