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-rw-r--r--compiler/rustc_query_system/src/dep_graph/query.rs5
-rw-r--r--compiler/rustc_query_system/src/ich/impls_syntax.rs2
2 files changed, 2 insertions, 5 deletions
diff --git a/compiler/rustc_query_system/src/dep_graph/query.rs b/compiler/rustc_query_system/src/dep_graph/query.rs
index 27b3b5e1366..9dcc41e2726 100644
--- a/compiler/rustc_query_system/src/dep_graph/query.rs
+++ b/compiler/rustc_query_system/src/dep_graph/query.rs
@@ -24,10 +24,7 @@ impl<K: DepKind> DepGraphQuery<K> {
 
     pub fn push(&mut self, index: DepNodeIndex, node: DepNode<K>, edges: &[DepNodeIndex]) {
         let source = self.graph.add_node(node);
-        if index.index() >= self.dep_index_to_index.len() {
-            self.dep_index_to_index.resize(index.index() + 1, None);
-        }
-        self.dep_index_to_index[index] = Some(source);
+        self.dep_index_to_index.insert(index, source);
         self.indices.insert(node, source);
 
         for &target in edges.iter() {
diff --git a/compiler/rustc_query_system/src/ich/impls_syntax.rs b/compiler/rustc_query_system/src/ich/impls_syntax.rs
index 0bc811eb044..8865ecf3e05 100644
--- a/compiler/rustc_query_system/src/ich/impls_syntax.rs
+++ b/compiler/rustc_query_system/src/ich/impls_syntax.rs
@@ -75,7 +75,7 @@ impl<'a> HashStable<StableHashingContext<'a>> for SourceFile {
             ref normalized_pos,
         } = *self;
 
-        (name_hash as u64).hash_stable(hcx, hasher);
+        name_hash.hash_stable(hcx, hasher);
 
         src_hash.hash_stable(hcx, hasher);