From 79855bb9ba43060b6718a468ad73094d173d7ce7 Mon Sep 17 00:00:00 2001
From: Samuel Marks <807580+SamuelMarks@users.noreply.github.com>
Date: Thu, 11 Jul 2024 20:06:48 -0400
Subject: [PATCH 1/4] [library/std/src/process.rs] `PartialEq` & `Eq` for
 `ExitCode`

---
 std/src/process.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/std/src/process.rs b/std/src/process.rs
index f351dab78dc1a..727f8f5ceb660 100644
--- a/std/src/process.rs
+++ b/std/src/process.rs
@@ -1979,7 +1979,7 @@ impl crate::error::Error for ExitStatusError {}
 ///     ExitCode::SUCCESS
 /// }
 /// ```
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 #[stable(feature = "process_exitcode", since = "1.61.0")]
 pub struct ExitCode(imp::ExitCode);
 

From 9b21aa05574a294e25e24e812ae40e52529d3101 Mon Sep 17 00:00:00 2001
From: Kornel <kornel@geekhood.net>
Date: Wed, 17 Jul 2024 22:39:31 +0100
Subject: [PATCH 2/4] Document futility of printing temporary pointers

---
 core/src/fmt/mod.rs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/core/src/fmt/mod.rs b/core/src/fmt/mod.rs
index 45c2b6a6a0f73..8fc43cb1875e3 100644
--- a/core/src/fmt/mod.rs
+++ b/core/src/fmt/mod.rs
@@ -975,9 +975,17 @@ pub trait UpperHex {
 /// `p` formatting.
 ///
 /// The `Pointer` trait should format its output as a memory location. This is commonly presented
-/// as hexadecimal.
+/// as hexadecimal. For more information on formatters, see [the module-level documentation][module].
 ///
-/// For more information on formatters, see [the module-level documentation][module].
+/// Printing of pointers is not a reliable way to discover how Rust programs are implemented.
+/// The act of reading an address changes the program itself, and may change how the data is represented
+/// in memory, and may affect which optimizations are applied to the code.
+///
+/// The printed pointer values are not guaranteed to be stable nor unique identifiers of objects.
+/// Rust allows moving values to different memory locations, and may reuse the same memory locations
+/// for different purposes.
+///
+/// There is no guarantee that the printed value can be converted back to a pointer.
 ///
 /// [module]: ../../std/fmt/index.html
 ///

From 355445b026172e79f6f899d0154eb79738fc3a6e Mon Sep 17 00:00:00 2001
From: Samuel Marks <807580+SamuelMarks@users.noreply.github.com>
Date: Thu, 5 Sep 2024 11:37:05 -0500
Subject: [PATCH 3/4] [library/std/src/process.rs] Update docstring with
 @joshtriplett's replacement text

---
 std/src/process.rs | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/std/src/process.rs b/std/src/process.rs
index 727f8f5ceb660..c25383405c43b 100644
--- a/std/src/process.rs
+++ b/std/src/process.rs
@@ -1937,10 +1937,14 @@ impl crate::error::Error for ExitStatusError {}
 /// to its parent under normal termination.
 ///
 /// `ExitCode` is intended to be consumed only by the standard library (via
-/// [`Termination::report()`]), and intentionally does not provide accessors like
-/// `PartialEq`, `Eq`, or `Hash`. Instead the standard library provides the
-/// canonical `SUCCESS` and `FAILURE` exit codes as well as `From<u8> for
-/// ExitCode` for constructing other arbitrary exit codes.
+/// [`Termination::report()`]). For forwards compatibility with potentially
+/// unusual targets, this type currently does not provide `Eq`, `Hash`, or
+/// access to the raw value. This type does provide `PartialEq` for
+/// comparison, but note that there may potentially be multiple failure
+/// codes, some of which will _not_ compare equal to `ExitCode::FAILURE`.
+/// The standard library provides the canonical `SUCCESS` and `FAILURE`
+/// exit codes as well as `From<u8> for ExitCode` for constructing other
+/// arbitrary exit codes.
 ///
 /// # Portability
 ///

From b2d6fdd4d856a462f1f16eab7dcfe6a7b4099b86 Mon Sep 17 00:00:00 2001
From: Samuel Marks <807580+SamuelMarks@users.noreply.github.com>
Date: Fri, 6 Sep 2024 12:32:00 -0500
Subject: [PATCH 4/4] [library/std/src/process.rs] Remove `Eq` `derive`

---
 std/src/process.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/std/src/process.rs b/std/src/process.rs
index c25383405c43b..2c964648f0c2e 100644
--- a/std/src/process.rs
+++ b/std/src/process.rs
@@ -1983,7 +1983,7 @@ impl crate::error::Error for ExitStatusError {}
 ///     ExitCode::SUCCESS
 /// }
 /// ```
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[derive(Clone, Copy, Debug, PartialEq)]
 #[stable(feature = "process_exitcode", since = "1.61.0")]
 pub struct ExitCode(imp::ExitCode);