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Co-authored-by: Waffle Maybe <waffle.lapkin@gmail.com>

2 files changed, 2 insertions, 3 deletions

diff --git a/compiler/rustc_codegen_ssa/src/back/metadata.rs b/compiler/rustc_codegen_ssa/src/back/metadata.rs
index aaf75819e97..d5a223c1a7b 100644
--- a/compiler/rustc_codegen_ssa/src/back/metadata.rs
+++ b/compiler/rustc_codegen_ssa/src/back/metadata.rs
@@ -162,7 +162,7 @@ pub(super) fn get_metadata_xcoff<'a>(path: &Path, data: &'a [u8]) -> Result<&'a
             return Err(format!("Invalid metadata symbol offset: {offset}"));
         }
         // The offset specifies the location of rustc metadata in the comment section.
-        // The metadata is preceded by a 4-byte length field.
+        // The metadata is preceded by a 8-byte length field.
         let len = u64::from_le_bytes(info_data[(offset - 8)..offset].try_into().unwrap()) as usize;
         if offset + len > (info_data.len() as usize) {
             return Err(format!(
diff --git a/compiler/rustc_metadata/src/rmeta/decoder.rs b/compiler/rustc_metadata/src/rmeta/decoder.rs
index 9aaa72cfc80..ff0b8cad333 100644
--- a/compiler/rustc_metadata/src/rmeta/decoder.rs
+++ b/compiler/rustc_metadata/src/rmeta/decoder.rs
@@ -705,9 +705,8 @@ impl MetadataBlob {
     }
 
     fn root_pos(&self) -> NonZeroUsize {
-        let slice = &self.blob()[..];
         let offset = METADATA_HEADER.len();
-        let pos_bytes = slice[offset..][..8].try_into().unwrap();
+        let pos_bytes = self.blob()[offset..][..8].try_into().unwrap();
         let pos = u64::from_le_bytes(pos_bytes);
         NonZeroUsize::new(pos as usize).unwrap()
     }