without_provenance_mut in std::ptr - Rust
Description: Creates a pointer with the given address and no provenance.

## without_provenance_mut

# Function without_provenance_mut

1.84.0 (const: 1.84.0) · Source

    pub const fn without_provenance_mut<T>(addr: usize) -> *mut T

Expand description

Creates a pointer with the given address and no provenance.

This is equivalent to `ptr::null_mut().with_addr(addr)`.

Without provenance, this pointer is not associated with any actual allocation. Such a no-provenance pointer may be used for zero-sized memory accesses (if suitably aligned), but non-zero-sized memory accesses with a no-provenance pointer are UB. No-provenance pointers are little more than a `usize` address in disguise.

This is different from `addr as *mut T`, which creates a pointer that picks up a previously exposed provenance. See `with_exposed_provenance_mut` for more details on that operation.

This is a Strict Provenance API.