revert making internal APIs const fn.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/libcore/str/mod.rs b/src/libcore/str/mod.rs
index f5bfe804899..e710cbffe4d 100644
--- a/src/libcore/str/mod.rs
+++ b/src/libcore/str/mod.rs
@@ -476,16 +476,16 @@ pub struct Chars<'a> {
 /// The first byte is special, only want bottom 5 bits for width 2, 4 bits
 /// for width 3, and 3 bits for width 4.
 #[inline]
-const fn utf8_first_byte(byte: u8, width: u32) -> u32 { (byte & (0x7F >> width)) as u32 }
+fn utf8_first_byte(byte: u8, width: u32) -> u32 { (byte & (0x7F >> width)) as u32 }
 
 /// Returns the value of `ch` updated with continuation byte `byte`.
 #[inline]
-const fn utf8_acc_cont_byte(ch: u32, byte: u8) -> u32 { (ch << 6) | (byte & CONT_MASK) as u32 }
+fn utf8_acc_cont_byte(ch: u32, byte: u8) -> u32 { (ch << 6) | (byte & CONT_MASK) as u32 }
 
 /// Checks whether the byte is a UTF-8 continuation byte (i.e. starts with the
 /// bits `10`).
 #[inline]
-const fn utf8_is_cont_byte(byte: u8) -> bool { (byte & !CONT_MASK) == TAG_CONT_U8 }
+fn utf8_is_cont_byte(byte: u8) -> bool { (byte & !CONT_MASK) == TAG_CONT_U8 }
 
 #[inline]
 fn unwrap_or_0(opt: Option<&u8>) -> u8 {
@@ -1420,7 +1420,7 @@ const NONASCII_MASK: usize = 0x80808080_80808080u64 as usize;
 
 /// Returns `true` if any byte in the word `x` is nonascii (>= 128).
 #[inline]
-const fn contains_nonascii(x: usize) -> bool {
+fn contains_nonascii(x: usize) -> bool {
     (x & NONASCII_MASK) != 0
 }