diff --git a/compiler/rustc_data_structures/src/base_n.rs b/compiler/rustc_data_structures/src/base_n.rs index 4567759c004..58704350706 100644 --- a/compiler/rustc_data_structures/src/base_n.rs +++ b/compiler/rustc_data_structures/src/base_n.rs @@ -16,22 +16,21 @@ const BASE_64: &[u8; MAX_BASE] = pub fn push_str(mut n: u128, base: usize, output: &mut String) { debug_assert!(base >= 2 && base <= MAX_BASE); let mut s = [0u8; 128]; - let mut index = 0; + let mut index = s.len(); let base = base as u128; loop { + index -= 1; s[index] = BASE_64[(n % base) as usize]; - index += 1; n /= base; if n == 0 { break; } } - s[0..index].reverse(); - output.push_str(str::from_utf8(&s[0..index]).unwrap()); + output.push_str(str::from_utf8(&s[index..]).unwrap()); } #[inline]