1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/rt/backtrace.rs b/src/libstd/rt/backtrace.rs
index e1925fc79d0..33f8713e1a1 100644
--- a/src/libstd/rt/backtrace.rs
+++ b/src/libstd/rt/backtrace.rs
@@ -999,7 +999,7 @@ mod imp {
                 let bytes = cstr.as_bytes();
                 match cstr.as_str() {
                     Some(s) => try!(super::demangle(w, s)),
-                    None => try!(w.write(bytes[..bytes.len()-1])),
+                    None => try!(w.write(bytes.slice_to(bytes.len() - 1))),
                 }
             }
             try!(w.write(['\n' as u8]));