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-rw-r--r--compiler/rustc_span/src/lib.rs4
1 files changed, 1 insertions, 3 deletions
diff --git a/compiler/rustc_span/src/lib.rs b/compiler/rustc_span/src/lib.rs
index aa8859ed1a3..16583582933 100644
--- a/compiler/rustc_span/src/lib.rs
+++ b/compiler/rustc_span/src/lib.rs
@@ -2159,9 +2159,7 @@ where
         };
 
         Hash::hash(&TAG_VALID_SPAN, hasher);
-        // We truncate the stable ID hash and line and column numbers. The chances
-        // of causing a collision this way should be minimal.
-        Hash::hash(&(file.name_hash as u64), hasher);
+        Hash::hash(&file.name_hash, hasher);
 
         // Hash both the length and the end location (line/column) of a span. If we
         // hash only the length, for example, then two otherwise equal spans with