rust/tests/fail/stacked_borrows/buggy_split_at_mut.stderr

error: Undefined Behavior: trying to retag from <TAG> for Unique permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
  --> $DIR/buggy_split_at_mut.rs:LL:CC
   |
LL |     let (a, b) = safe::split_at_mut(&mut array, 0);
   |          ^
   |          |
   |          trying to retag from <TAG> for Unique permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
   |          this error occurs as part of retag at ALLOC[0x0..0x10]
   |
   = 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 Unique retag at offsets [0x0..0x10]
  --> $DIR/buggy_split_at_mut.rs:LL:CC
   |
LL |                 from_raw_parts_mut(ptr, len - mid), // BUG: should be "mid" instead of "len - mid"
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: <TAG> was later invalidated at offsets [0x0..0x10] by a Unique retag
  --> $DIR/buggy_split_at_mut.rs:LL:CC
   |
LL |                 from_raw_parts_mut(ptr.offset(mid as isize), len - mid),
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: BACKTRACE:
   = note: inside `main` at $DIR/buggy_split_at_mut.rs:LL:CC

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to previous error
Improve information sharing across SB diagnostics Previous Stacked Borrows diagnostics were missing a lot of information about the state of the interpreter, and it was difficult to add additional state because it was threaded through all the intervening function signatures. This change factors a lot of the arguments which used to be passed individually to many stacked borrows functions into a single `DiagnosticCx`, which is built in `Stacks::for_each`, and since it wraps a handle to `AllocHistory`, we can now handle more nuanced things like heterogeneous borrow of `!Freeze` types. 2022-05-22 18:39:09 -05:00			`error: Undefined Behavior: trying to retag from <TAG> for Unique permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location`
Add a custom ui test runner and move all tests to it 2022-03-17 08:49:10 -05:00			`--> $DIR/buggy_split_at_mut.rs:LL:CC`
			`\|`
			`LL \| let (a, b) = safe::split_at_mut(&mut array, 0);`
			`\| ^`
			`\| \|`
Improve information sharing across SB diagnostics Previous Stacked Borrows diagnostics were missing a lot of information about the state of the interpreter, and it was difficult to add additional state because it was threaded through all the intervening function signatures. This change factors a lot of the arguments which used to be passed individually to many stacked borrows functions into a single `DiagnosticCx`, which is built in `Stacks::for_each`, and since it wraps a handle to `AllocHistory`, we can now handle more nuanced things like heterogeneous borrow of `!Freeze` types. 2022-05-22 18:39:09 -05:00			`\| trying to retag from <TAG> for Unique permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location`
			`\| this error occurs as part of retag at ALLOC[0x0..0x10]`
Add a custom ui test runner and move all tests to it 2022-03-17 08:49:10 -05:00			`\|`
bless 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`
Add a custom ui test runner and move all tests to it 2022-03-17 08:49:10 -05:00			`= help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/stacked-borrows.md for further information`
Improve information sharing across SB diagnostics Previous Stacked Borrows diagnostics were missing a lot of information about the state of the interpreter, and it was difficult to add additional state because it was threaded through all the intervening function signatures. This change factors a lot of the arguments which used to be passed individually to many stacked borrows functions into a single `DiagnosticCx`, which is built in `Stacks::for_each`, and since it wraps a handle to `AllocHistory`, we can now handle more nuanced things like heterogeneous borrow of `!Freeze` types. 2022-05-22 18:39:09 -05:00			`help: <TAG> was created by a Unique retag at offsets [0x0..0x10]`
Add a custom ui test runner and move all tests to it 2022-03-17 08:49:10 -05:00			`--> $DIR/buggy_split_at_mut.rs:LL:CC`
			`\|`
Bless stderr files after rustfmt 2022-06-21 01:49:55 -05:00			`LL \| from_raw_parts_mut(ptr, len - mid), // BUG: should be "mid" instead of "len - mid"`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
Improve information sharing across SB diagnostics Previous Stacked Borrows diagnostics were missing a lot of information about the state of the interpreter, and it was difficult to add additional state because it was threaded through all the intervening function signatures. This change factors a lot of the arguments which used to be passed individually to many stacked borrows functions into a single `DiagnosticCx`, which is built in `Stacks::for_each`, and since it wraps a handle to `AllocHistory`, we can now handle more nuanced things like heterogeneous borrow of `!Freeze` types. 2022-05-22 18:39:09 -05:00			`help: <TAG> was later invalidated at offsets [0x0..0x10] by a Unique retag`
Add a custom ui test runner and move all tests to it 2022-03-17 08:49:10 -05:00			`--> $DIR/buggy_split_at_mut.rs:LL:CC`
			`\|`
Bless stderr files after rustfmt 2022-06-21 01:49:55 -05:00			`LL \| from_raw_parts_mut(ptr.offset(mid as isize), len - mid),`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
make backtrace header a bit more visible 2022-08-31 07:51:05 -05:00			`= note: BACKTRACE:`
Add a custom ui test runner and move all tests to it 2022-03-17 08:49:10 -05:00			= note: inside `main` at $DIR/buggy_split_at_mut.rs:LL:CC

			note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

			`error: aborting due to previous error`