Use no_std by default #173
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The `std` feature is only needed to enable `impl Write for SmallVec`, which most users of this crate do not need. This patch replaces the enabled-by-default `std` feature with a disabled-by-default `write` feature. This decreases the chance that users of this crate will accidentally depend on libstd when they don't need it.
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r? @emilio |
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@bors-servo r+ |
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📌 Commit fffb185 has been approved by |
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Use no_std by default Since `alloc` became stable, the `std` feature is only needed to enable `impl Write for SmallVec`, which most users of this crate do not need. This patch replaces the enabled-by-default `std` feature with a disabled-by-default `write` feature. This decreases the chance that users of this crate will accidentally depend on libstd when they don't need it.
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☀️ Test successful - checks-travis |
mbrubeck
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* [breaking change] Use `MaybeUninit` internally to avoid possible undefined behavior (servo#162, servo#170). * [breaking change] The `drain` method now takes a range argument, just like the standard `Vec::drain` (servo#145). * [breaking change] Remove the `unreachable` function and replace it with the new standard `unreachable_unchecked` function (servo#164). * [breaking change] Use `no_std` by default. This crate depends only on `core` and `alloc` by default. If the optional `write` feature is enabled then it depends on `std` so that `SmallVec<[u8, _]>` can implement the `std::io::Write` trait (servo#173). * Add support for 96-element small vectors, `SmallVec<[T; 96]>` (servo#163). * Iterators now implement `FusedIterator` (servo#172). * Indexing now uses the standard `SliceIndex` trait (servo#166). * Remove the deprecated `VecLike` trait (servo#165). * Use `NonNull` internally (servo#171). * Add automatic fuzz testing and MIRI testing (servo#168, servo#162). * Update syntax and formatting to Rust 2018 standard (servo#174, servo#167).
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Nov 2, 2019
Version 1.0.0 * Requires Rust 1.36 or later. * [breaking change] Use `MaybeUninit` to avoid possible undefined behavior (#162, #170). * [breaking change] The `drain` method now takes a range argument, just like the standard `Vec::drain` (#145). * [breaking change] Remove the `unreachable` function and replace it with the new standard `unreachable_unchecked` function (#164). * [breaking change] Use `no_std` by default. This crate depends only on `core` and `alloc` by default. If the optional `write` feature is enabled then it depends on `std` so that `SmallVec<[u8;_]>` can implement the `std::io::Write` trait (#173). * Add support for 96-element small vectors, `SmallVec<[T; 96]>` (#163). * Iterators now implement `FusedIterator` (#172). * Indexing now uses the standard `SliceIndex` trait (#166). * Remove the deprecated `VecLike` trait (#165). * Use `NonNull` internally (#171). * Add automatic fuzz testing and MIRI testing (#168, #162). * Update syntax and formatting to Rust 2018 standard (#174, #167).
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Since
allocbecame stable, thestdfeature is only needed to enableimpl Write for SmallVec, which most users of this crate do not need. This patch replaces the enabled-by-defaultstdfeature with a disabled-by-defaultwritefeature. This decreases the chance that users of this crate will accidentally depend on libstd when they don't need it.