063ef18fdc
Revert <https://github.com/rust-lang/rust/pull/138084> to buy time to consider options that avoids breaking downstream usages of cargo on distributed `rustc-src` artifacts, where such cargo invocations fail due to inability to inherit `lints` from workspace root manifest's `workspace.lints` (this is only valid for the source rust-lang/rust workspace, but not really the distributed `rustc-src` artifacts). This breakage was reported in <https://github.com/rust-lang/rust/issues/138304>. This reverts commit48caf81484, reversing changes made toc6662879b2.
53 lines
1.8 KiB
Rust
53 lines
1.8 KiB
Rust
// tidy-alphabetical-start
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#![cfg_attr(all(feature = "nightly", test), feature(stmt_expr_attributes))]
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#![cfg_attr(feature = "nightly", allow(internal_features))]
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#![cfg_attr(feature = "nightly", feature(extend_one, step_trait, test))]
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#![cfg_attr(feature = "nightly", feature(new_range_api))]
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#![cfg_attr(feature = "nightly", feature(new_zeroed_alloc))]
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#![warn(unreachable_pub)]
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// tidy-alphabetical-end
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pub mod bit_set;
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#[cfg(feature = "nightly")]
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pub mod interval;
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mod idx;
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mod slice;
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mod vec;
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pub use idx::{Idx, IntoSliceIdx};
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pub use rustc_index_macros::newtype_index;
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pub use slice::IndexSlice;
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#[doc(no_inline)]
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pub use vec::IndexVec;
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/// Type size assertion. The first argument is a type and the second argument is its expected size.
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///
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/// <div class="warning">
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///
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/// Emitting hard errors from size assertions like this is generally not
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/// recommended, especially in libraries, because they can cause build failures if the layout
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/// algorithm or dependencies change. Here in rustc we control the toolchain and layout algorithm,
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/// so the former is not a problem. For the latter we have a lockfile as rustc is an application and
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/// precompiled library.
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///
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/// Short version: Don't copy this macro into your own code. Use a `#[test]` instead.
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///
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/// </div>
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#[macro_export]
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#[cfg(not(feature = "rustc_randomized_layouts"))]
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macro_rules! static_assert_size {
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($ty:ty, $size:expr) => {
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const _: [(); $size] = [(); ::std::mem::size_of::<$ty>()];
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};
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}
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#[macro_export]
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#[cfg(feature = "rustc_randomized_layouts")]
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macro_rules! static_assert_size {
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($ty:ty, $size:expr) => {
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// no effect other than using the statements.
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// struct sizes are not deterministic under randomized layouts
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const _: (usize, usize) = ($size, ::std::mem::size_of::<$ty>());
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};
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}
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