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Use MaybeUninit to produce more correct layouts #63035

Merged
merged 2 commits into from
Aug 7, 2019
Merged

Use MaybeUninit to produce more correct layouts #63035

merged 2 commits into from
Aug 7, 2019

Commits on Jul 29, 2019

  1. Wrap promoted generator fields in MaybeUninit 

    This prevents uninhabited fields from "infecting" the abi and
largest_niche of the generator layout.

This fixes a latent bug, where an uninhabited field could be promoted to
the generator prefix and cause the entire generator to become
uninhabited.
    @tmandry
    tmandry committed Jul 29, 2019
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Commits on Aug 3, 2019

  1. Add niche-in-generator test

    @tmandry
    tmandry committed Aug 3, 2019
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