RFR(S): 8191950: assertion failed: no insertions allowed

[Roland Westrelin]

Hi Tobias,

Thanks for taking a look at this.

> The "dead loop?" comment is a bit confusing here but I assume the call
> is part of a loop that became unreachable?

Yes.
What about: check for unreachable loop?

> (You can remove the newline in 378)
>
> Was this introduced by a recent change (because the bug still has the integration_blocker label)?

No, not as far I can tell.

Roland.