inference: fix the correctness of inference bail out interface #48826
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Added the 1.9 backport label since this is somewhat critical fix on our effects system and so should be fixed even if the original issue doesn't happen on 1.9. |
vtjnash
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Feb 28, 2023
vtjnash
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Feb 28, 2023
aviatesk
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_apply_iterate
Since we allow overloading of the `bail_out_xxx` hooks, we need to make sure that we widen both type and effects to the top when bailing on inference regardless of the condition presumed by a hook. This commit particularly fixes the correctness of `bail_out_apply` (fixes #48807). I wanted to make a simplified test case for this, but it turns out to be a bit tricky since it relies on the details of multiple match analysis and the bail out logic.
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@nanosoldier |
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Your benchmark job has completed - no performance regressions were detected. A full report can be found here. |
aviatesk
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Mar 1, 2023
Since we allow overloading of the `bail_out_xxx` hooks, we need to make sure that we widen both type and effects to the top when bailing on inference regardless of the condition presumed by a hook. This commit particularly fixes the correctness of `bail_out_apply` (fixes #48807). I wanted to make a simplified test case for this, but it turns out to be a bit tricky since it relies on the details of multiple match analysis and the bail out logic.
KristofferC
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Mar 3, 2023
Since we allow overloading of the `bail_out_xxx` hooks, we need to make sure that we widen both type and effects to the top when bailing on inference regardless of the condition presumed by a hook. This commit particularly fixes the correctness of `bail_out_apply` (fixes #48807). I wanted to make a simplified test case for this, but it turns out to be a bit tricky since it relies on the details of multiple match analysis and the bail out logic.
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Since we allow overloading of the
bail_out_xxxhooks, we need to makesure that we widen both type and effects to the top when bailing on
inference regardless of the condition presumed by a hook.
This commit particularly fixes the correctness of
bail_out_apply(fixes #48807). I wanted to make a simplified test case for this, but
it turns out to be a bit tricky since it relies on the details of
multiple match analysis and the bail out logic.