Bug about range

[chaijie2018]

for i in 9..=0 {
  println(i)
}

Range does not support iterating from large to small, but there is no compilation error.

[peter-jerry-ye]

How could the compiler knows if you have:

let start = fetch("www.example.com/a/number").await!()
let end = fetch("www.example.com/another/number").await!()
for i in start..<end {
}

[hackwaly]

At least we can report warning on constant one?

[peter-jerry-ye]

Then should we report warning for these cases as well

for i = 0; i < 0; i = i + 1 {
}

for i = 0; i < -1; i = i + 1 {
}

while false {
}

[Lampese]

I think this is a lint issue, shouldn't it be reported at the compiler level?

[peter-jerry-ye]

Since it's a lint issue, we'll handle it with linter @myfreess