Remove a couple of #[doc(hidden)] pub fn and their #[feature] gates

library/alloc/src/ffi/c_str.rs

@@ -991,12 +991,6 @@ impl IntoStringError {
     pub fn utf8_error(&self) -> Utf8Error {
         self.error
     }
-
-    #[doc(hidden)]
-    #[unstable(feature = "cstr_internals", issue = "none")]
-    pub fn __source(&self) -> &Utf8Error {
-        &self.error
-    }
 }
 
 impl IntoStringError {
@@ -1141,6 +1135,6 @@ impl core::error::Error for IntoStringError {
     }
 
     fn source(&self) -> Option<&(dyn core::error::Error + 'static)> {
-        Some(self.__source())
+        Some(&self.error)
     }
 }

library/core/src/array/mod.rs

@@ -131,28 +131,15 @@ pub struct TryFromSliceError(());
 impl fmt::Display for TryFromSliceError {
     #[inline]
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        fmt::Display::fmt(self.__description(), f)
+        #[allow(deprecated)]
+        self.description().fmt(f)
     }
 }
 
 #[stable(feature = "try_from", since = "1.34.0")]
 impl Error for TryFromSliceError {
     #[allow(deprecated)]
     fn description(&self) -> &str {
-        self.__description()
-    }
-}
-
-impl TryFromSliceError {
-    #[unstable(
-        feature = "array_error_internals",
-        reason = "available through Error trait and this method should not \
-                     be exposed publicly",
-        issue = "none"
-    )]
-    #[inline]
-    #[doc(hidden)]
-    pub fn __description(&self) -> &str {
         "could not convert slice to array"
     }
 }

library/core/src/char/convert.rs

@@ -2,6 +2,7 @@
 
 use crate::char::TryFromCharError;
 use crate::convert::TryFrom;
+use crate::error::Error;
 use crate::fmt;
 use crate::mem::transmute;
 use crate::str::FromStr;
@@ -150,31 +151,28 @@ pub struct ParseCharError {
     kind: CharErrorKind,
 }
 
-impl ParseCharError {
-    #[unstable(
-        feature = "char_error_internals",
-        reason = "this method should not be available publicly",
-        issue = "none"
-    )]
-    #[doc(hidden)]
-    pub fn __description(&self) -> &str {
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+enum CharErrorKind {
+    EmptyString,
+    TooManyChars,
+}
+
+#[stable(feature = "char_from_str", since = "1.20.0")]
+impl Error for ParseCharError {
+    #[allow(deprecated)]
+    fn description(&self) -> &str {
         match self.kind {
             CharErrorKind::EmptyString => "cannot parse char from empty string",
             CharErrorKind::TooManyChars => "too many characters in string",
         }
     }
 }
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq)]
-enum CharErrorKind {
-    EmptyString,
-    TooManyChars,
-}
-
 #[stable(feature = "char_from_str", since = "1.20.0")]
 impl fmt::Display for ParseCharError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        self.__description().fmt(f)
+        #[allow(deprecated)]
+        self.description().fmt(f)
     }
 }
 

library/core/src/error.rs

@@ -486,25 +486,9 @@ impl Error for crate::char::CharTryFromError {
     }
 }
 
-#[stable(feature = "char_from_str", since = "1.20.0")]
-impl Error for crate::char::ParseCharError {
-    #[allow(deprecated)]
-    fn description(&self) -> &str {
-        self.__description()
-    }
-}
-
 #[stable(feature = "duration_checked_float", since = "1.66.0")]
 impl Error for crate::time::TryFromFloatSecsError {}
 
-#[stable(feature = "frombyteswithnulerror_impls", since = "1.17.0")]
-impl Error for crate::ffi::FromBytesWithNulError {
-    #[allow(deprecated)]
-    fn description(&self) -> &str {
-        self.__description()
-    }
-}
-
 #[stable(feature = "cstr_from_bytes_until_nul", since = "CURRENT_RUSTC_VERSION")]
 impl Error for crate::ffi::FromBytesUntilNulError {}
 

library/core/src/ffi/c_str.rs

@@ -1,4 +1,5 @@
 use crate::cmp::Ordering;
+use crate::error::Error;
 use crate::ffi::c_char;
 use crate::fmt;
 use crate::intrinsics;
@@ -129,10 +130,12 @@ impl FromBytesWithNulError {
     const fn not_nul_terminated() -> FromBytesWithNulError {
         FromBytesWithNulError { kind: FromBytesWithNulErrorKind::NotNulTerminated }
     }
+}
 
-    #[doc(hidden)]
-    #[unstable(feature = "cstr_internals", issue = "none")]
-    pub fn __description(&self) -> &str {
+#[stable(feature = "frombyteswithnulerror_impls", since = "1.17.0")]
+impl Error for FromBytesWithNulError {
+    #[allow(deprecated)]
+    fn description(&self) -> &str {
         match self.kind {
             FromBytesWithNulErrorKind::InteriorNul(..) => {
                 "data provided contains an interior nul byte"
@@ -180,7 +183,7 @@ impl Default for &CStr {
 impl fmt::Display for FromBytesWithNulError {
     #[allow(deprecated, deprecated_in_future)]
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.write_str(self.__description())?;
+        f.write_str(self.description())?;
         if let FromBytesWithNulErrorKind::InteriorNul(pos) = self.kind {
             write!(f, " at byte pos {pos}")?;
         }

library/core/src/num/dec2flt/mod.rs

@@ -75,6 +75,7 @@
     issue = "none"
 )]
 
+use crate::error::Error;
 use crate::fmt;
 use crate::str::FromStr;
 
@@ -182,15 +183,10 @@ enum FloatErrorKind {
     Invalid,
 }
 
-impl ParseFloatError {
-    #[unstable(
-        feature = "int_error_internals",
-        reason = "available through Error trait and this method should \
-                  not be exposed publicly",
-        issue = "none"
-    )]
-    #[doc(hidden)]
-    pub fn __description(&self) -> &str {
+#[stable(feature = "rust1", since = "1.0.0")]
+impl Error for ParseFloatError {
+    #[allow(deprecated)]
+    fn description(&self) -> &str {
         match self.kind {
             FloatErrorKind::Empty => "cannot parse float from empty string",
             FloatErrorKind::Invalid => "invalid float literal",
@@ -201,7 +197,8 @@ impl ParseFloatError {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl fmt::Display for ParseFloatError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        self.__description().fmt(f)
+        #[allow(deprecated)]
+        self.description().fmt(f)
     }
 }
 

library/core/src/num/error.rs

@@ -9,23 +9,19 @@ use crate::fmt;
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub struct TryFromIntError(pub(crate) ());
 
-impl TryFromIntError {
-    #[unstable(
-        feature = "int_error_internals",
-        reason = "available through Error trait and this method should \
-                  not be exposed publicly",
-        issue = "none"
-    )]
-    #[doc(hidden)]
-    pub fn __description(&self) -> &str {
-        "out of range integral type conversion attempted"
+#[stable(feature = "try_from", since = "1.34.0")]
+impl fmt::Display for TryFromIntError {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        #[allow(deprecated)]
+        self.description().fmt(fmt)
     }
 }
 
 #[stable(feature = "try_from", since = "1.34.0")]
-impl fmt::Display for TryFromIntError {
-    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
-        self.__description().fmt(fmt)
+impl Error for TryFromIntError {
+    #[allow(deprecated)]
+    fn description(&self) -> &str {
+        "out of range integral type conversion attempted"
     }
 }
 
@@ -121,43 +117,26 @@ impl ParseIntError {
     pub fn kind(&self) -> &IntErrorKind {
         &self.kind
     }
-    #[unstable(
-        feature = "int_error_internals",
-        reason = "available through Error trait and this method should \
-                  not be exposed publicly",
-        issue = "none"
-    )]
-    #[doc(hidden)]
-    pub fn __description(&self) -> &str {
-        match self.kind {
-            IntErrorKind::Empty => "cannot parse integer from empty string",
-            IntErrorKind::InvalidDigit => "invalid digit found in string",
-            IntErrorKind::PosOverflow => "number too large to fit in target type",
-            IntErrorKind::NegOverflow => "number too small to fit in target type",
-            IntErrorKind::Zero => "number would be zero for non-zero type",
-        }
-    }
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl fmt::Display for ParseIntError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        self.__description().fmt(f)
+        #[allow(deprecated)]
+        self.description().fmt(f)
     }
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl Error for ParseIntError {
     #[allow(deprecated)]
     fn description(&self) -> &str {
-        self.__description()
-    }
-}
-
-#[stable(feature = "try_from", since = "1.34.0")]
-impl Error for TryFromIntError {
-    #[allow(deprecated)]
-    fn description(&self) -> &str {
-        self.__description()
+        match self.kind {
+            IntErrorKind::Empty => "cannot parse integer from empty string",
+            IntErrorKind::InvalidDigit => "invalid digit found in string",
+            IntErrorKind::PosOverflow => "number too large to fit in target type",
+            IntErrorKind::NegOverflow => "number too small to fit in target type",
+            IntErrorKind::Zero => "number would be zero for non-zero type",
+        }
     }
 }

library/core/src/num/mod.rs

@@ -9,9 +9,6 @@ use crate::mem;
 use crate::ops::{Add, Mul, Sub};
 use crate::str::FromStr;
 
-#[cfg(not(no_fp_fmt_parse))]
-use crate::error::Error;
-
 // Used because the `?` operator is not allowed in a const context.
 macro_rules! try_opt {
     ($e:expr) => {
@@ -61,15 +58,6 @@ pub use wrapping::Wrapping;
 #[cfg(not(no_fp_fmt_parse))]
 pub use dec2flt::ParseFloatError;
 
-#[cfg(not(no_fp_fmt_parse))]
-#[stable(feature = "rust1", since = "1.0.0")]
-impl Error for ParseFloatError {
-    #[allow(deprecated)]
-    fn description(&self) -> &str {
-        self.__description()
-    }
-}
-
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use error::ParseIntError;
 

library/std/src/lib.rs

@@ -273,12 +273,9 @@
 #![feature(utf8_chunks)]
 //
 // Library features (core):
-#![feature(array_error_internals)]
 #![feature(atomic_mut_ptr)]
-#![feature(char_error_internals)]
 #![feature(char_internals)]
 #![feature(core_intrinsics)]
-#![feature(cstr_internals)]
 #![feature(duration_constants)]
 #![feature(error_generic_member_access)]
 #![feature(error_in_core)]
@@ -290,7 +287,6 @@
 #![feature(float_next_up_down)]
 #![feature(hasher_prefixfree_extras)]
 #![feature(hashmap_internals)]
-#![feature(int_error_internals)]
 #![feature(is_some_and)]
 #![feature(maybe_uninit_slice)]
 #![feature(maybe_uninit_write_slice)]