Fix a runtime problem from overapplying ability requests#5970
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Fix a runtime problem from overapplying ability requests#5970
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When continuations with captured pending arguments were called, it was possible to have situations that discarded those arguments, similar to an erroneous `yield`. There is explicit logic in the latter to apply the yielded result to the pending arguments that was absent in the continuation case. This adds comparable logic to the continuation call.
pchiusano
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Oct 28, 2025
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Base tests pass. |
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I'll run the cloud integration tests with this. |
ceedubs
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Oops forgot to send an update right away, but cloud integration tests pass
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This fixes a bug in the runtime implementation of calling continuations.
There was missing logic related to the continuation having captured pending arguments. In the
Yieldcase there is logic that looks for these, and applies a function result to the pending arguments. This was missing from the continuation call case, which should behave similarly (because a continuation call is implemented as 'push captured continuation back and yield arguments').It's apparently tricky to actually get into situations that actually trigger the previously bad logic. I think usually it is covered by the logic for
Yield, because the continuation happens to have also captured a frame that justYields its argument. However, we have an example of a more complicated situation that triggers the old bug, included in a test case here.Fixes #5947.