diff options
| -rw-r--r-- | src/libstd/str.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstd/str.rs b/src/libstd/str.rs index 8944d0b291e..df24d8b20e2 100644 --- a/src/libstd/str.rs +++ b/src/libstd/str.rs @@ -1427,7 +1427,8 @@ impl<'self> StrSlice<'self> for &'self str { /// out of bounds. #[inline] fn slice_to(&self, end: uint) -> &'self str { - self.slice(0, end) + assert!(self.is_char_boundary(end)); + unsafe { raw::slice_bytes(*self, 0, end) } } /// Returns a slice of the string from the char range |