]> git.lizzy.rs Git - rust.git/blob - src/tools/miri/tests/fail/stacked_borrows/illegal_write_despite_exposed1.stderr
attempt to clarify what the backtrace belongs to when there could be ambiguity
[rust.git] / src / tools / miri / tests / fail / stacked_borrows / illegal_write_despite_exposed1.stderr
1 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
2   --> $DIR/illegal_write_despite_exposed1.rs:LL:CC
3    |
4 LL |         let _val = *root2;
5    |                    ^^^^^^
6    |                    |
7    |                    attempting a read access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
8    |                    this error occurs as part of an access at ALLOC[0x0..0x4]
9    |
10    = help: this indicates a potential bug in the program: it performed an invalid operation, but the Stacked Borrows rules it violated are still experimental
11    = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/stacked-borrows.md for further information
12 help: <TAG> was created by a SharedReadOnly retag at offsets [0x0..0x4]
13   --> $DIR/illegal_write_despite_exposed1.rs:LL:CC
14    |
15 LL |         let root2 = &*exposed_ptr;
16    |                     ^^^^^^^^^^^^^
17 help: <TAG> was later invalidated at offsets [0x0..0x4] by a write access
18   --> $DIR/illegal_write_despite_exposed1.rs:LL:CC
19    |
20 LL |         *exposed_ptr = 0;
21    |         ^^^^^^^^^^^^^^^^
22    = note: BACKTRACE (of the first span):
23    = note: inside `main` at $DIR/illegal_write_despite_exposed1.rs:LL:CC
24
25 note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
26
27 error: aborting due to previous error
28