Add a usize-indexed append-only-vec

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_session/src/cstore.rs b/compiler/rustc_session/src/cstore.rs
index a262c06d91f..dd1721801f3 100644
--- a/compiler/rustc_session/src/cstore.rs
+++ b/compiler/rustc_session/src/cstore.rs
@@ -6,7 +6,7 @@ use crate::search_paths::PathKind;
 use crate::utils::NativeLibKind;
 use crate::Session;
 use rustc_ast as ast;
-use rustc_data_structures::sync::{self, AppendOnlyVec, MetadataRef, RwLock};
+use rustc_data_structures::sync::{self, AppendOnlyIndexVec, MetadataRef, RwLock};
 use rustc_hir::def_id::{CrateNum, DefId, LocalDefId, StableCrateId, LOCAL_CRATE};
 use rustc_hir::definitions::{DefKey, DefPath, DefPathHash, Definitions};
 use rustc_span::hygiene::{ExpnHash, ExpnId};
@@ -257,6 +257,6 @@ pub type CrateStoreDyn = dyn CrateStore + sync::Sync + sync::Send;
 pub struct Untracked {
     pub cstore: RwLock<Box<CrateStoreDyn>>,
     /// Reference span for definitions.
-    pub source_span: AppendOnlyVec<LocalDefId, Span>,
+    pub source_span: AppendOnlyIndexVec<LocalDefId, Span>,
     pub definitions: RwLock<Definitions>,
 }