Crate alloca

Mostly safe no_std wrapper for alloca in Rust.

This crate uses Rust lifetime system to ensure that stack allocated memory will not be used after function return, but it does not make any guarantee about memory that is turned into raw pointer and stored somewhere else.

Example

// allocate 128 bytes on the stack
alloca::with_alloca(128, |memory| {
    // memory: &mut [MaybeUninit<u8>]
    assert_eq!(memory.len(), 128);
});

Functions

alloca

Allocates T on stack space.

with_alloca

Allocates [u8; size] memory on stack and invokes closure with this slice as argument.

with_alloca_zeroed

Same as with_alloca except it zeroes memory slice.