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──────────────────────────────────────────────────
Warning: this tree is indicative only. Some tags may have been hidden.
0.. 4.. 8
| Act | Act | └─┬──<TAG=root of the allocation>
| Frz |?Cel | └────<TAG=a>
──────────────────────────────────────────────────
error: Undefined Behavior: write access through <TAG> (a) at ALLOC[0x0] is forbidden
--> tests/fail/tree_borrows/cell-inside-struct.rs:LL:CC
|
LL | (*a).field1 = 88;
| ^^^^^^^^^^^^^^^^ Undefined Behavior occurred here
|
= help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental
= help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information
= help: the accessed tag <TAG> (a) has state Frozen which forbids this child write access
help: the accessed tag <TAG> was created here, in the initial state Cell
--> tests/fail/tree_borrows/cell-inside-struct.rs:LL:CC
|
LL | let a = &root;
| ^^^^^
= note: BACKTRACE (of the first span):
= note: inside `main` at tests/fail/tree_borrows/cell-inside-struct.rs:LL:CC
note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
error: aborting due to 1 previous error
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