19 files changed, 74 insertions, 32 deletions
diff --git a/rust/zerocopy/src/byte_slice.rs b/rust/zerocopy/src/byte_slice.rs
index a5ded4a18b39..b7f85098dbc4 100644
--- a/rust/zerocopy/src/byte_slice.rs
+++ b/rust/zerocopy/src/byte_slice.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/byteorder.rs b/rust/zerocopy/src/byteorder.rs
index 8f70048f1eb0..c761d5728320 100644
--- a/rust/zerocopy/src/byteorder.rs
+++ b/rust/zerocopy/src/byteorder.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2019 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
@@ -100,6 +100,7 @@ mod private {
 
 #[allow(missing_copy_implementations, missing_debug_implementations)]
 #[doc(hidden)]
+#[derive(PartialEq)]
 pub enum Order {
     BigEndian,
     LittleEndian,
@@ -164,6 +165,42 @@ pub type BE = BigEndian;
 /// A type alias for [`LittleEndian`].
 pub type LE = LittleEndian;
 
+macro_rules! impl_dbg_trait {
+    ($name:ident, $native:ident) => {
+        impl<O: ByteOrder> Debug for $name<O> {
+            #[inline]
+            fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+                // This results in a format like "U16(42)".
+                f.debug_tuple(stringify!($name)).field(&self.get()).finish()
+            }
+        }
+    };
+}
+
+macro_rules! impl_dbg_traits {
+    ($name:ident, $native:ident, "floating point number") => {
+        #[cfg(not(no_fp_fmt_parse))]
+        impl_dbg_trait!($name, $native);
+
+        #[cfg(no_fp_fmt_parse)]
+        impl<O: ByteOrder> Debug for $name<O> {
+            #[inline]
+            fn fmt(&self, _f: &mut Formatter<'_>) -> fmt::Result {
+                panic!("floating point support is turned off");
+            }
+        }
+    };
+    ($name:ident, $native:ident, "unsigned integer") => {
+        impl_dbg_traits!($name, $native, @all_types);
+    };
+    ($name:ident, $native:ident, "signed integer") => {
+        impl_dbg_traits!($name, $native, @all_types);
+    };
+    ($name:ident, $native:ident, @all_types) => {
+        impl_dbg_trait!($name, $native);
+    };
+}
+
 macro_rules! impl_fmt_trait {
     ($name:ident, $native:ident, $trait:ident) => {
         impl<O: ByteOrder> $trait for $name<O> {
@@ -177,6 +214,8 @@ macro_rules! impl_fmt_trait {
 
 macro_rules! impl_fmt_traits {
     ($name:ident, $native:ident, "floating point number") => {
+        #[cfg(not(no_fp_fmt_parse))]
+        impl_fmt_trait!($name, $native, Display);
     };
     ($name:ident, $native:ident, "unsigned integer") => {
         impl_fmt_traits!($name, $native, @all_types);
@@ -687,16 +726,9 @@ example of how it can be used for parsing UDP packets.
             }
         }
 
+        impl_dbg_traits!($name, $native, $number_kind);
         impl_fmt_traits!($name, $native, $number_kind);
         impl_ops_traits!($name, $native, $number_kind);
-
-        impl<O: ByteOrder> Debug for $name<O> {
-            #[inline]
-            fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-                // This results in a format like "U16(42)".
-                f.debug_tuple(stringify!($name)).field(&self.get()).finish()
-            }
-        }
     };
 }
 
diff --git a/rust/zerocopy/src/deprecated.rs b/rust/zerocopy/src/deprecated.rs
index 24bafbf9adeb..59ddd35c77c6 100644
--- a/rust/zerocopy/src/deprecated.rs
+++ b/rust/zerocopy/src/deprecated.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
diff --git a/rust/zerocopy/src/error.rs b/rust/zerocopy/src/error.rs
index 7cb08c31d452..5eb30de934f3 100644
--- a/rust/zerocopy/src/error.rs
+++ b/rust/zerocopy/src/error.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
diff --git a/rust/zerocopy/src/impls.rs b/rust/zerocopy/src/impls.rs
index 22fd6c3d5d94..62e234c5202b 100644
--- a/rust/zerocopy/src/impls.rs
+++ b/rust/zerocopy/src/impls.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
@@ -1359,7 +1359,7 @@ mod simd {
         #[cfg(not(no_zerocopy_aarch64_simd_1_59_0))]
         simd_arch_mod!(
             #[cfg(all(
-                target_arch = "aarch64", 
+                target_arch = "aarch64",
                 any(
                     target_endian = "little",
                     not(no_zerocopy_aarch64_simd_be_1_87_0)
diff --git a/rust/zerocopy/src/layout.rs b/rust/zerocopy/src/layout.rs
index 6015d0f2de52..b1fa0cd436db 100644
--- a/rust/zerocopy/src/layout.rs
+++ b/rust/zerocopy/src/layout.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
@@ -71,6 +71,8 @@ impl SizeInfo {
     /// Attempts to create a `SizeInfo` from `Self` in which `elem_size` is a
     /// `NonZeroUsize`. If `elem_size` is 0, returns `None`.
     #[allow(unused)]
+    #[cfg_attr(not(zerocopy_inline_always), inline)]
+    #[cfg_attr(zerocopy_inline_always, inline(always))]
     const fn try_to_nonzero_elem_size(&self) -> Option<SizeInfo<NonZeroUsize>> {
         Some(match *self {
             SizeInfo::Sized { size } => SizeInfo::Sized { size },
diff --git a/rust/zerocopy/src/lib.rs b/rust/zerocopy/src/lib.rs
index 3302d67602ab..572f0563fe2f 100644
--- a/rust/zerocopy/src/lib.rs
+++ b/rust/zerocopy/src/lib.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2018 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
@@ -12,7 +12,7 @@
 // After updating the following doc comment, make sure to run the following
 // command to update `README.md` based on its contents:
 //
-//   cargo -q run --manifest-path tools/Cargo.toml -p generate-readme > README.md
+//   (cd .. && cargo -q run --manifest-path tools/Cargo.toml -p generate-readme) > README.md
 
 //! ***<span style="font-size: 140%">Fast, safe, <span
 //! style="color:red;">compile error</span>. Pick two.</span>***
@@ -174,7 +174,7 @@
 //!
 //! [Miri]: https://github.com/rust-lang/miri
 //! [Kani]: https://github.com/model-checking/kani
-//! [soundness policy]: https://github.com/google/zerocopy/blob/main/POLICIES.md#soundness
+//! [soundness policy]: https://github.com/google/zerocopy/blob/main/zerocopy/POLICIES.md#soundness
 //!
 //! # Relationship to Project Safe Transmute
 //!
@@ -203,7 +203,7 @@
 //!
 //! See our [MSRV policy].
 //!
-//! [MSRV policy]: https://github.com/google/zerocopy/blob/main/POLICIES.md#msrv
+//! [MSRV policy]: https://github.com/google/zerocopy/blob/main/zerocopy/POLICIES.md#msrv
 //!
 //! # Changelog
 //!
@@ -435,6 +435,8 @@ const _: () = {
     WARNING
 };
 
+#[cfg(all(any(feature = "derive", test), zerocopy_unstable_linux))]
+pub use zerocopy_derive::most_traits;
 /// Implements [`KnownLayout`].
 ///
 /// This derive analyzes various aspects of a type's layout that are needed for
@@ -2832,7 +2834,7 @@ pub unsafe trait TryFromBytes {
     /// ```
     ///
     /// [`try_mut_from_bytes`]: TryFromBytes::try_mut_from_bytes
-    ///  
+    ///
     #[doc = codegen_header!("h5", "try_mut_from_bytes_with_elems")]
     ///
     /// See [`TryFromBytes::try_ref_from_bytes_with_elems`](#method.try_ref_from_bytes_with_elems.codegen).
diff --git a/rust/zerocopy/src/macros.rs b/rust/zerocopy/src/macros.rs
index b801d86a8fa6..ec67c03a44fc 100644
--- a/rust/zerocopy/src/macros.rs
+++ b/rust/zerocopy/src/macros.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
diff --git a/rust/zerocopy/src/pointer/inner.rs b/rust/zerocopy/src/pointer/inner.rs
index 5db08080141f..949b60a3f83e 100644
--- a/rust/zerocopy/src/pointer/inner.rs
+++ b/rust/zerocopy/src/pointer/inner.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/pointer/invariant.rs b/rust/zerocopy/src/pointer/invariant.rs
index 1802d23563db..7ff0d43dad5e 100644
--- a/rust/zerocopy/src/pointer/invariant.rs
+++ b/rust/zerocopy/src/pointer/invariant.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/pointer/mod.rs b/rust/zerocopy/src/pointer/mod.rs
index 3461f7f5ca80..d6eacc52febe 100644
--- a/rust/zerocopy/src/pointer/mod.rs
+++ b/rust/zerocopy/src/pointer/mod.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2023 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/pointer/ptr.rs b/rust/zerocopy/src/pointer/ptr.rs
index b7c4ea56d2b2..7213f6f4a04e 100644
--- a/rust/zerocopy/src/pointer/ptr.rs
+++ b/rust/zerocopy/src/pointer/ptr.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2023 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/pointer/transmute.rs b/rust/zerocopy/src/pointer/transmute.rs
index a534984b70d3..ef9836698203 100644
--- a/rust/zerocopy/src/pointer/transmute.rs
+++ b/rust/zerocopy/src/pointer/transmute.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2025 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/ref.rs b/rust/zerocopy/src/ref.rs
index 860066d75196..e49f2a887ffa 100644
--- a/rust/zerocopy/src/ref.rs
+++ b/rust/zerocopy/src/ref.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2024 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
diff --git a/rust/zerocopy/src/split_at.rs b/rust/zerocopy/src/split_at.rs
index 9a67d5acbb0d..d7778425a31d 100644
--- a/rust/zerocopy/src/split_at.rs
+++ b/rust/zerocopy/src/split_at.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2025 The Fuchsia Authors
 //
 // Licensed under the 2-Clause BSD License <LICENSE-BSD or
diff --git a/rust/zerocopy/src/util/macro_util.rs b/rust/zerocopy/src/util/macro_util.rs
index 1abb0fbeb46e..ceeb80432b0b 100644
--- a/rust/zerocopy/src/util/macro_util.rs
+++ b/rust/zerocopy/src/util/macro_util.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2022 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/util/macros.rs b/rust/zerocopy/src/util/macros.rs
index 43e4fd64ee15..7e63e3a54fc4 100644
--- a/rust/zerocopy/src/util/macros.rs
+++ b/rust/zerocopy/src/util/macros.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2023 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy/src/util/mod.rs b/rust/zerocopy/src/util/mod.rs
index d6d4c6c2fcd9..02fd4ed62741 100644
--- a/rust/zerocopy/src/util/mod.rs
+++ b/rust/zerocopy/src/util/mod.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2023 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
@@ -150,6 +150,8 @@ pub(crate) fn validate_aligned_to<T: AsAddress, U>(t: T) -> Result<(), Alignment
     // Ensures that we add the minimum required padding.
     kani::ensures(|&p| p < align.get()),
 )]
+#[cfg_attr(not(zerocopy_inline_always), inline)]
+#[cfg_attr(zerocopy_inline_always, inline(always))]
 pub(crate) const fn padding_needed_for(len: usize, align: NonZeroUsize) -> usize {
     #[cfg(kani)]
     #[kani::proof_for_contract(padding_needed_for)]
@@ -251,6 +253,8 @@ pub(crate) const fn round_down_to_next_multiple_of_alignment(
     n & mask
 }
 
+#[cfg_attr(not(zerocopy_inline_always), inline)]
+#[cfg_attr(zerocopy_inline_always, inline(always))]
 pub(crate) const fn max(a: NonZeroUsize, b: NonZeroUsize) -> NonZeroUsize {
     if a.get() < b.get() {
         b
@@ -259,6 +263,8 @@ pub(crate) const fn max(a: NonZeroUsize, b: NonZeroUsize) -> NonZeroUsize {
     }
 }
 
+#[cfg_attr(not(zerocopy_inline_always), inline)]
+#[cfg_attr(zerocopy_inline_always, inline(always))]
 pub(crate) const fn min(a: NonZeroUsize, b: NonZeroUsize) -> NonZeroUsize {
     if a.get() > b.get() {
         b
diff --git a/rust/zerocopy/src/wrappers.rs b/rust/zerocopy/src/wrappers.rs
index 266aec25fa58..1a8cf2b41d55 100644
--- a/rust/zerocopy/src/wrappers.rs
+++ b/rust/zerocopy/src/wrappers.rs
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
-
+//
 // Copyright 2023 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0