From b871f027a42fe035f8b44ceb521682ad15f2e228 Mon Sep 17 00:00:00 2001
From: Jan Niehusmann <jan@gondor.com>
Date: Thu, 17 Oct 2024 17:09:30 +0000
Subject: [PATCH] Fix warning with rust 1.82.0

Since rust 1.82.0, addr_of is no longer unsafe:
https://github.com/rust-lang/rust/pull/125834

Just removing the unsafe statement would break builds with older
versions of rust. Instead, allow the unused_unsafe lint.
---
 rp-binary-info/src/lib.rs                 | 1 +
 rp235x-hal-examples/src/bin/block_loop.rs | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/rp-binary-info/src/lib.rs b/rp-binary-info/src/lib.rs
index a36f027a5..6d20a2483 100644
--- a/rp-binary-info/src/lib.rs
+++ b/rp-binary-info/src/lib.rs
@@ -106,6 +106,7 @@ extern "C" {
 #[link_section = ".boot_info"]
 #[cfg(feature = "binary-info")]
 #[used]
+#[allow(unused_unsafe)] // addr_of! is safe since rust 1.82.0
 pub static PICOTOOL_HEADER: Header = unsafe {
     Header::new(
         core::ptr::addr_of!(__bi_entries_start),
diff --git a/rp235x-hal-examples/src/bin/block_loop.rs b/rp235x-hal-examples/src/bin/block_loop.rs
index c2bc96274..cfd48a2aa 100644
--- a/rp235x-hal-examples/src/bin/block_loop.rs
+++ b/rp235x-hal-examples/src/bin/block_loop.rs
@@ -37,12 +37,14 @@ extern "C" {
 /// Tell the Boot ROM about our application
 #[link_section = ".start_block"]
 #[used]
+#[allow(unused_unsafe)] // addr_of! is safe since rust 1.82.0
 pub static START_IMAGE_DEF: hal::block::ImageDef =
     hal::block::ImageDef::secure_exe().with_offset(unsafe { core::ptr::addr_of!(start_to_end) });
 
 /// A second Block, and the end of the program in flash
 #[link_section = ".end_block"]
 #[used]
+#[allow(unused_unsafe)] // addr_of! is safe since rust 1.82.0
 pub static END_IMAGE_DEF: hal::block::Block<1> =
     // Put a placeholder item in the block.
     hal::block::Block::new([hal::block::item_ignored()])