bjoernager/rust
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try apply rustc_pass_by_value to Span

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This commit is contained in:
lcnr 2022-01-27 08:17:13 +01:00
parent e6808381e5
commit 2684dfe583
8 changed files with 32 additions and 23 deletions
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9
compiler/rustc_span/src/span_encoding.rs
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@ -61,6 +61,15 @@ use rustc_data_structures::fx::FxIndexSet;
/// using the callback `SPAN_TRACK` to access the query engine.
///
#[derive(Clone, Copy, Eq, PartialEq, Hash)]
// FIXME(@lcnr): Enable this attribute once the bootstrap
// compiler knows of `rustc_pass_by_value`.
//
// Right now, this lint would only trigger when compiling the
// stage 2 compiler, which is fairly annoying as there are
// a lot of places using `&Span` right now. After the next bootstrap bump,
// the lint will already trigger when using stage 1, which is a lot less annoying.
//
// #[cfg_attr(not(bootstrap), rustc_pass_by_value)]
pub struct Span {
base_or_index: u32,
len_or_tag: u16,