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Diffstat (limited to 'src/librustc_data_structures/captures.rs')
| -rw-r--r-- | src/librustc_data_structures/captures.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/librustc_data_structures/captures.rs b/src/librustc_data_structures/captures.rs new file mode 100644 index 00000000000..26b90ebfd5f --- /dev/null +++ b/src/librustc_data_structures/captures.rs @@ -0,0 +1,10 @@ +/// "Signaling" trait used in impl trait to tag lifetimes that you may +/// need to capture but don't really need for other reasons. +/// Basically a workaround; see [this comment] for details. +/// +/// [this comment]: https://github.com/rust-lang/rust/issues/34511#issuecomment-373423999 +// FIXME(eddyb) false positive, the lifetime parameter is "phantom" but needed. +#[allow(unused_lifetimes)] +pub trait Captures<'a> {} + +impl<'a, T: ?Sized> Captures<'a> for T {} |