async-recursion-alloc.rs

#![feature(lang_items)]
#![feature(alloc_error_handler)]
#![no_std]

pub mod another_module;

extern crate alloc;
use alloc::boxed::Box;

use async_recursion::async_recursion;

// Use `wee_alloc` as the global allocator.
#[global_allocator]
static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;

#[panic_handler]
fn panic(_: &core::panic::PanicInfo) -> ! {
    loop {}
}

#[alloc_error_handler]
fn oom(_: core::alloc::Layout) -> ! {
    loop {}
}

#[lang = "eh_personality"] extern fn eh_personality() {}

#[async_recursion]
async fn bad_adder(x: u32, y: u32) -> u32 {
    if x > 0 {
        1 + bad_adder(x - 1, y).await
    } else if y > 0 {
        1 + bad_adder(x, y - 1).await
    } else {
        0
    }
}