DDC passes, dart2js and VM fail.
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The dart2js and VM fringe-following scheme could be modified to call
`.iterator` at the `yield*` site and use the Iterator instead of the Iterable.
Calling `.iterator` at the `yield*` site would move the exception to the right place. It might also present an optimization opportunity where the call might be inlined, or the entry into the fringe-following algorithm could be made more efficient based on the type of the iterator.
Change-Id: Icfb6f7ca0b92cbeea1349ce138e469cfa707f571
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/295200
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Lasse Nielsen <lrn@google.com>
Stephen Adams
bfd71ad330