from stdint import *
import stdio
import coro


class MyError(Exception):
    pass


async def leaf(x: int) -> int:
    return x + 1


async def boom() -> int:
    raise MyError("boom msg")
    return 0


async def task() -> int:
    fin: int = 0
    try:
        fin = 1
        await boom()
    finally:
        fin = fin + 1
        stdio.printf("finally ran, fin = %d\n", fin)
    return 99


def main() -> int:
    n: int = 0
    for i in range(3):
        tt: coro.Coroutine = coro.Coroutine(*&task())
        r: int = coro.coro_run(tt)
        e: int = coro.coro_exception(tt)
        m: t.CPtr = coro.coro_exception_msg(tt)
        stdio.printf("[%d] r = %d, exc = %d, msg = %s\n", i, r, e, m)
        coro.coro_destroy(tt)
        n = n + 1
    return 0