Function alloc

plugins/ast/rust/src/lib.rs:53–59

(length: usize)

#[unsafe(no_mangle)]
pub extern "C" fn alloc(length: usize) -> *mut u8 {
    if length == 0 {
        return core::ptr::null_mut();
    }

    unsafe { std::alloc::alloc(MemoryLayout::from_size_align_unchecked(length, 1)) }
}

/// # Safety
/// `ptr`/`len` must come from a prior `alloc` call.