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| author | pierwill <pierwill@users.noreply.github.com> | 2022-03-04 10:52:05 -0600 |
|---|---|---|
| committer | pierwill <pierwill@users.noreply.github.com> | 2022-03-04 11:00:36 -0600 |
| commit | 98fe2eb9aface6f97cae9612d55f6a32812165e4 (patch) | |
| tree | f248fd86bec4601452503debfb5fcb979c18112d | |
| parent | b4bf56cd66ca83e908fd43bde4c627f94b2a8a9f (diff) | |
| download | rust-98fe2eb9aface6f97cae9612d55f6a32812165e4.tar.gz rust-98fe2eb9aface6f97cae9612d55f6a32812165e4.zip | |
Remove ordering traits from `rustc_span::hygiene::LocalExpnId`
| -rw-r--r-- | compiler/rustc_span/src/hygiene.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/compiler/rustc_span/src/hygiene.rs b/compiler/rustc_span/src/hygiene.rs index 5fae46d5fd8..86adfa7a18c 100644 --- a/compiler/rustc_span/src/hygiene.rs +++ b/compiler/rustc_span/src/hygiene.rs @@ -85,10 +85,17 @@ rustc_index::newtype_index! { /// A unique ID associated with a macro invocation and expansion. pub struct LocalExpnId { ENCODABLE = custom + ORD_IMPL = custom DEBUG_FORMAT = "expn{}" } } +// To ensure correctness of incremental compilation, +// `LocalExpnId` must not implement `Ord` or `PartialOrd`. +// See https://github.com/rust-lang/rust/issues/90317. +impl !Ord for LocalExpnId {} +impl !PartialOrd for LocalExpnId {} + /// Assert that the provided `HashStableContext` is configured with the 'default' /// `HashingControls`. We should always have bailed out before getting to here /// with a non-default mode. With this check in place, we can avoid the need |