v/vlib/v/tests/big_array_allocation_test.v

20 lines
540 B
V

[direct_array_access]
fn test_big_int_array() {
dump(sizeof(isize))
mut maxn := 500_000_000 // try allocating ~2GB worth of integers on 32bit platforms
if sizeof(isize) > 4 {
maxn = 1_000_000_000 // 1 billion integers, when each is 4 bytes => require ~4GB
}
dump(maxn)
mut data := []int{len: maxn}
// ensure that all of the elements are written at least once, to prevent the OS from cheating:
for i in 0 .. maxn {
data[i] = i
}
assert data[0] == 0
assert data[maxn - 1] == maxn - 1
dump(data#[0..10])
dump(data#[-10..])
}