chore: checkpoint before Python removal

vendor/zerocopy-derive/tests/ui/cfgs/on_error.msrv.stderr

@@ -0,0 +1,20 @@
+error: `on_error` is experimental; pass '--cfg zerocopy_unstable_derive_on_error' to enable
+  --> $DIR/on_error.rs:13:10
+   |
+13 | #[derive(FromBytes)]
+   |          ^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `FromBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `bool: FromBytes` is not satisfied
+  --> $DIR/on_error.rs:13:10
+   |
+13 | #[derive(FromBytes)]
+   |          ^^^^^^^^^ the trait `FromBytes` is not implemented for `bool`
+   |
+   = help: see issue #48214
+   = note: this error originates in the derive macro `FromBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.

vendor/zerocopy-derive/tests/ui/cfgs/on_error.nightly.stderr

@@ -0,0 +1,35 @@
+error: `on_error` is experimental; pass '--cfg zerocopy_unstable_derive_on_error' to enable
+  --> $DIR/on_error.rs:13:10
+   |
+13 | #[derive(FromBytes)]
+   |          ^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `FromBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `bool: FromBytes` is not satisfied
+  --> $DIR/on_error.rs:13:10
+   |
+13 | #[derive(FromBytes)]
+   |          ^^^^^^^^^ the trait `FromBytes` is not implemented for `bool`
+   |
+   = note: Consider adding `#[derive(FromBytes)]` to `bool`
+   = help: the following other types implement trait `FromBytes`:
+             ()
+             (A, B)
+             (A, B, C)
+             (A, B, C, D)
+             (A, B, C, D, E)
+             (A, B, C, D, E, F)
+             (A, B, C, D, E, F, G)
+             (A, B, C, D, E, F, G, H)
+           and 79 others
+   = help: see issue #48214
+   = note: this error originates in the derive macro `FromBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
+   |
+ 9 + #![feature(trivial_bounds)]
+   |
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.

vendor/zerocopy-derive/tests/ui/cfgs/on_error.rs

@@ -0,0 +1,21 @@
+// Copyright 2026 The Fuchsia Authors
+//
+// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
+// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0>, or the MIT
+// license <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
+// This file may not be copied, modified, or distributed except according to
+// those terms.
+
+extern crate zerocopy_renamed;
+
+use zerocopy_renamed::FromBytes;
+
+#[derive(FromBytes)]
+//~^ ERROR: `on_error` is experimental; pass '--cfg zerocopy_unstable_derive_on_error' to enable
+//~| ERROR: the trait bound `bool: FromBytes` is not satisfied
+#[zerocopy(crate = "zerocopy_renamed")]
+#[zerocopy(on_error = "skip")]
+#[repr(C)]
+struct Foo(bool);
+
+fn main() {}

vendor/zerocopy-derive/tests/ui/cfgs/on_error.stable.stderr

@@ -0,0 +1,31 @@
+error: `on_error` is experimental; pass '--cfg zerocopy_unstable_derive_on_error' to enable
+  --> $DIR/on_error.rs:13:10
+   |
+13 | #[derive(FromBytes)]
+   |          ^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `FromBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `bool: FromBytes` is not satisfied
+  --> $DIR/on_error.rs:13:10
+   |
+13 | #[derive(FromBytes)]
+   |          ^^^^^^^^^ the trait `FromBytes` is not implemented for `bool`
+   |
+   = note: Consider adding `#[derive(FromBytes)]` to `bool`
+   = help: the following other types implement trait `FromBytes`:
+             ()
+             (A, B)
+             (A, B, C)
+             (A, B, C, D)
+             (A, B, C, D, E)
+             (A, B, C, D, E, F)
+             (A, B, C, D, E, F, G)
+             (A, B, C, D, E, F, G, H)
+           and 79 others
+   = help: see issue #48214
+   = note: this error originates in the derive macro `FromBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.

vendor/zerocopy-derive/tests/ui/cfgs/union_into_bytes_cfg.msrv.stderr

@@ -0,0 +1,11 @@
+error: requires --cfg zerocopy_derive_union_into_bytes;
+please let us know you use this feature: https://github.com/google/zerocopy/discussions/1802
+  --> $DIR/union_into_bytes_cfg.rs:20:10
+   |
+20 | #[derive(IntoBytes)]
+   |          ^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `IntoBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to previous error
+

vendor/zerocopy-derive/tests/ui/cfgs/union_into_bytes_cfg.nightly.stderr

@@ -0,0 +1,11 @@
+error: requires --cfg zerocopy_derive_union_into_bytes;
+       please let us know you use this feature: https://github.com/google/zerocopy/discussions/1802
+  --> $DIR/union_into_bytes_cfg.rs:20:10
+   |
+20 | #[derive(IntoBytes)]
+   |          ^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `IntoBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 1 previous error
+

vendor/zerocopy-derive/tests/ui/cfgs/union_into_bytes_cfg.rs

@@ -0,0 +1,28 @@
+// Copyright 2024 The Fuchsia Authors
+//
+// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
+// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0>, or the MIT
+// license <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
+// This file may not be copied, modified, or distributed except according to
+// those terms.
+
+//! See: https://github.com/google/zerocopy/issues/553
+//! zerocopy must still allow derives of deprecated types.
+//! This test has a hand-written impl of a deprecated type, and should result in a compilation
+//! error. If zerocopy does not tack an allow(deprecated) annotation onto its impls, then this
+//! test will fail because more than one compile error will be generated.
+#![deny(deprecated)]
+
+extern crate zerocopy_renamed;
+
+use zerocopy_renamed::IntoBytes;
+
+#[derive(IntoBytes)]
+//~^ ERROR: requires --cfg zerocopy_derive_union_into_bytes
+#[zerocopy(crate = "zerocopy_renamed")]
+#[repr(C)]
+union Foo {
+    a: u8,
+}
+
+fn main() {}

vendor/zerocopy-derive/tests/ui/cfgs/union_into_bytes_cfg.stable.stderr

@@ -0,0 +1,11 @@
+error: requires --cfg zerocopy_derive_union_into_bytes;
+       please let us know you use this feature: https://github.com/google/zerocopy/discussions/1802
+  --> $DIR/union_into_bytes_cfg.rs:20:10
+   |
+20 | #[derive(IntoBytes)]
+   |          ^^^^^^^^^
+   |
+   = note: this error originates in the derive macro `IntoBytes` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 1 previous error
+