Flexbox: thread 'LayoutWorker worker 3/3' panicked at 'attempted to divide by zero'

[paulrouget]

<style>
  div {
    display: flex;
    flex-grow: 1;
  }
</style>

<div>
  <div>
  </div>
</div>

thread 'LayoutWorker worker 3/3' panicked at 'attempted to divide by zero', /components/util/geometry.rs:169

[paulrouget]

In components/layout/flex.rs, in inline_mode_assign_inline_sizes, I see:

let even_content_inline_size = content_inline_size / ImmutableFlowUtils::child_count(self as &Flow) as i32;

Which I guess is the issue. Adding a child to the empty div doesn't crash.