rust/tests/fail/stacked_borrows/invalidate_against_barrier2.stderr

41 lines
1.8 KiB
Plaintext
Raw Normal View History

error: Undefined Behavior: not granting access to tag <TAG> because incompatible item [SharedReadOnly for <TAG>] is protected by call ID
--> $DIR/invalidate_against_barrier2.rs:LL:CC
|
LL | unsafe { *x = 0 };
| ^^^^^^ not granting access to tag <TAG> because incompatible item [SharedReadOnly for <TAG>] is protected by call ID
|
2022-06-12 00:34:01 -05:00
= 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/invalidate_against_barrier2.rs:LL:CC
|
LL | let xraw = &mut x as *mut _;
| ^^^^^^
help: <TAG> was protected due to <TAG> which was created here
--> $DIR/invalidate_against_barrier2.rs:LL:CC
|
LL | inner(xraw, xref);
| ^^^^
help: this protector is live for this call
--> $DIR/invalidate_against_barrier2.rs:LL:CC
|
LL | / fn inner(x: *mut i32, _y: &i32) {
LL | | // If `x` and `y` alias, retagging is fine with this... but we really
LL | | // shouldn't be allowed to write to `x` at all because `y` was assumed to be
LL | | // immutable for the duration of this call.
LL | | unsafe { *x = 0 };
LL | | }
| |_^
= note: backtrace:
= note: inside `inner` at $DIR/invalidate_against_barrier2.rs:LL:CC
note: inside `main` at $DIR/invalidate_against_barrier2.rs:LL:CC
--> $DIR/invalidate_against_barrier2.rs:LL:CC
|
LL | inner(xraw, xref);
| ^^^^^^^^^^^^^^^^^
note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
error: aborting due to previous error