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error: Undefined Behavior: not granting access to tag <TAG> because that would remove [Unique for <TAG>] which is strongly protected
--> tests/fail/function_calls/arg_inplace_mutate.rs:LL:CC
|
LL | unsafe { ptr.write(S(0)) };
| ^^^^^^^^^^^^^^^ Undefined Behavior occurred here
|
= 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 SharedReadWrite retag at offsets [0x0..0x4]
--> tests/fail/function_calls/arg_inplace_mutate.rs:LL:CC
|
LL | / mir! {
LL | | let _unit: ();
LL | | {
LL | | let non_copy = S(42);
... |
LL | | }
| |_____^
help: <TAG> is this argument
--> tests/fail/function_calls/arg_inplace_mutate.rs:LL:CC
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LL | unsafe { ptr.write(S(0)) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: BACKTRACE (of the first span):
= note: inside `callee` at tests/fail/function_calls/arg_inplace_mutate.rs:LL:CC
note: inside `main`
--> tests/fail/function_calls/arg_inplace_mutate.rs:LL:CC
|
LL | Call(_unit = callee(Move(*ptr), ptr), ReturnTo(after_call), UnwindContinue())
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: this error originates in the macro `::core::intrinsics::mir::__internal_remove_let` which comes from the expansion of the macro `mir` (in Nightly builds, run with -Z macro-backtrace for more info)
note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
error: aborting due to 1 previous error
|
