@run:0

Some basic smoke tests for provenance.

Allocates one or more shadow stack slots from the requested section.

Checks whether a node can be replaced by its only child. If so, returns the index of said only child. If not, returns none.

Like [`Self::can_be_replaced_by_single_child`], but for the dead-tag GC path. The caller iterates the dead tags directly, so `idx` is already known to

Returns true if a node where the strongest idempotent foreign access is `self` can skip the access `happening_next`. Note that if this returns `true`,

Test usize->ptr cast for dangling and OOB address. That is safe, and thus has to work.

Forget about the interior mutability of a cell.

Check that the destructor can be blocked joining another thread.

Check that destructors of the library thread locals are executed immediately after a thread terminates.

A child node was read-accessed: UB on Disabled, noop on the rest.

A child node was write-accessed: `Reserved` must become `Unique` to obtain write permissions, `Frozen` and `Disabled` cannot obtain such permissions a

Compiles the test binary for the given cargo invocation and copies it into `out_dir`. Aborts on compile failure or if no executable is created.

Creates a history event.

Checks how accesses from one subtree affect other subtrees. This test shows an example where we don't update a node whose exposed children are greater

Adding a type annotation used to change how MIR is generated, make sure we cover both cases.

Same thing as above, but non-async.