//ww:run-exit 47
// Migrated from 776_memio_vstream_run row borrowedread_view_eof.
package main;
import memio;
import io;
import os;
export fn main() i32 = {
    let seed: [4]u8;
    seed[0] = 1u8; seed[1] = 2u8; seed[2] = 3u8; seed[3] = 4u8;
    let st: memio.stream = memio.dynamicfrom(seed[0:4]);
    let br = memio.borrowedread(&st, 3);
    match (br) {
    case let b: []u8 => { if (b.len != 3 || b[0] != 1u8 || b[2] != 3u8) { return 91; }; };
    case io.eof => { return 92; };
    };
    let br2 = memio.borrowedread(&st, 2);
    match (br2) {
    case let b: []u8 => { return 93; };
    case io.eof => { return 47; };
    };
    return 99;
};