tree 8596c6df19d4aa451f2db88e09e6b598c5be9b83
parent 2d77b8e22eb8e52ef6f1fbc7efcf6934e854724b
author Natalie Weizenbaum <nweiz@google.com> 1619732944 -0700
committer GitHub <noreply@github.com> 1619732944 -0700
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Fix a StreamGroup bug when a component stream's listen() throws (#173)

This would put the StreamGroup into an inconsistent state where it
would believe itself to be active, but only some streams would have
subscriptions. This was exacerbated by dart-lang/sdk#45815, which
meant that even though _onListen threw an error a StreamSubscription
was created and returned, so further callbacks could still be called.

Now instead of going into an inconsistent state, the StreamGroup
simply cancels itself.