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Use NonNull in slice::Iter and slice::IterMut. #67588

Merged
merged 1 commit into from
Dec 28, 2019
Merged

Use NonNull in slice::Iter and slice::IterMut. #67588

merged 1 commit into from
Dec 28, 2019

Commits on Dec 26, 2019

  1. Use NonNull in slice::Iter and slice::IterMut. 

    `ptr` of `slice::Iter` and `slice::IterMut` can never be null, but this
fact wasn't exploited for layout optimizations. By changing `ptr` from
`*<mutability> T` to `NonNull<T>`, the compiler can now optimize layout
of `Option<Iter<'a, T>>`.
    @Kixunil
    Kixunil committed Dec 26, 2019
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