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-rw-r--r--src/libsyntax/parse/mod.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax/parse/mod.rs b/src/libsyntax/parse/mod.rs
index e7be876edbb..8ac5b6e5274 100644
--- a/src/libsyntax/parse/mod.rs
+++ b/src/libsyntax/parse/mod.rs
@@ -573,7 +573,7 @@ pub fn byte_lit(lit: &str) -> (u8, usize) {
     if lit.len() == 1 {
         (lit.as_bytes()[0], 1)
     } else {
-        assert!(lit.as_bytes()[0] == b'\\', err(0is));
+        assert!(lit.as_bytes()[0] == b'\\', err(0));
         let b = match lit.as_bytes()[1] {
             b'"' => b'"',
             b'n' => b'\n',