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| author | Aaron Hill <aa1ronham@gmail.com> | 2020-05-24 23:07:55 -0400 |
|---|---|---|
| committer | Aaron Hill <aa1ronham@gmail.com> | 2020-06-24 19:08:11 -0400 |
| commit | a13d4678feadf03e247ab6aae8279bfab9cdaa6d (patch) | |
| tree | 638f56f743b932f4748845257841d630b2c044d8 /src/libcore | |
| parent | d8ed1b03c202d77248eb0d335062f46026fc29c4 (diff) | |
| download | rust-a13d4678feadf03e247ab6aae8279bfab9cdaa6d.tar.gz rust-a13d4678feadf03e247ab6aae8279bfab9cdaa6d.zip | |
Implement associated lang items
Fixes #70718 This commit allows making associated items (e.g. associated functions and types) into lang items via the `#[lang]` attribute. This allows such items to be accessed directly, rather than by iterating over the parent item's associated items. I've added `FnOnce::Output` as a lang item, and updated one old usage to use the new lang item. The remaining uses can be updated separately.
Diffstat (limited to 'src/libcore')
| -rw-r--r-- | src/libcore/ops/function.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/ops/function.rs b/src/libcore/ops/function.rs index 04c7789fa4f..2cdfee87a35 100644 --- a/src/libcore/ops/function.rs +++ b/src/libcore/ops/function.rs @@ -224,6 +224,7 @@ pub trait FnMut<Args>: FnOnce<Args> { #[must_use = "closures are lazy and do nothing unless called"] pub trait FnOnce<Args> { /// The returned type after the call operator is used. + #[cfg_attr(not(bootstrap), lang = "fn_once_output")] #[stable(feature = "fn_once_output", since = "1.12.0")] type Output; |