Make VaListImpl<'f> invariant over the 'f lifetime #62639
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@bors r+ |
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📌 Commit d84e340 has been approved by |
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Make VaListImpl<'f> invariant over the 'f lifetime After doing some research on variance and going back to look at `VaList` and `VaListImpl`, I realized that `VaList<'a, 'f>` is invariant over the `'f` lifetime (and covariant over `'a`), but `VaListImpl<'f>` isn't invariant but probably should be. This patch makes `VaListImpl<'f>` invariant over `'f`. r? @eddyb cc @dlrobertson
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⌛ Testing commit d84e340 with merge b389cbb9c657ecc5c6810bbb432d266f58698318... |
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💔 Test failed - checks-azure |
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Fixed, the test needed a |
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@bors r+ |
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Make VaListImpl<'f> invariant over the 'f lifetime After doing some research on variance and going back to look at `VaList` and `VaListImpl`, I realized that `VaList<'a, 'f>` is invariant over the `'f` lifetime (and covariant over `'a`), but `VaListImpl<'f>` isn't invariant but probably should be. This patch makes `VaListImpl<'f>` invariant over `'f`. r? @eddyb cc @dlrobertson
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Rollup of 14 pull requests Successful merges: - #62103 (Add debug assertions to write_bytes and copy*) - #62405 (Remove never_type feature requirement for exhaustive patterns) - #62491 (Fix Pin urls in Option documentation) - #62533 (Add missing links for CannotReallocInPlace type) - #62634 (Less unsafe in the array example of MaybeUninit docs) - #62639 (Make VaListImpl<'f> invariant over the 'f lifetime) - #62646 (Tweak wording in feature gate errors) - #62662 (add spaces in front of trait requirements in libcore/cell.rs) - #62668 (Fix #62660) - #62673 (miri validation: better error messages for dangling references) - #62680 (Actually call `visit_block_entry` in `DataflowResultsConsumer`) - #62685 (Add info about undefined behavior to as_ref suggestions) - #62689 (Fix typo in RawWaker::new documentation) - #62698 (SGX target: don't pretend to be GNU/Linux to LLVM) Failed merges: r? @ghost
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@ahomescu nice work! |
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After doing some research on variance and going back to look at
VaListandVaListImpl, I realized thatVaList<'a, 'f>is invariant over the'flifetime (and covariant over'a), butVaListImpl<'f>isn't invariant but probably should be. This patch makesVaListImpl<'f>invariant over'f.r? @eddyb
cc @dlrobertson