From 48e952abded6c347321a6b5823f11e9df750679d Mon Sep 17 00:00:00 2001
From: Philipp Schuster <phip1611@gmail.com>
Date: Fri, 3 May 2024 15:20:09 +0200
Subject: [PATCH] miri: fix memory issue

---
 src/archive.rs | 10 ++++++++--
 src/lib.rs     |  4 ----
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/archive.rs b/src/archive.rs
index ff350b8..496e210 100644
--- a/src/archive.rs
+++ b/src/archive.rs
@@ -189,8 +189,14 @@ impl<'a> ArchiveHeaderIterator<'a> {
 
     /// Parse the memory at the given block as [`PosixHeader`].
     fn block_as_header(&self, block_index: usize) -> &'a PosixHeader {
-        let hdr_ptr = &self.archive_data[block_index * BLOCKSIZE];
-        unsafe { (hdr_ptr as *const u8).cast::<PosixHeader>().as_ref() }.unwrap()
+        unsafe {
+            self.archive_data
+                .as_ptr()
+                .add(block_index * BLOCKSIZE)
+                .cast::<PosixHeader>()
+                .as_ref()
+                .unwrap()
+        }
     }
 }
 
diff --git a/src/lib.rs b/src/lib.rs
index 691fe64..f25fef6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -47,10 +47,6 @@ SOFTWARE.
 //! ```rust
 //! use tar_no_std::TarArchiveRef;
 //!
-//! // log: not mandatory
-//! std::env::set_var("RUST_LOG", "trace");
-//! env_logger::init();
-//!
 //! // also works in no_std environment (except the println!, of course)
 //! let archive = include_bytes!("../tests/gnu_tar_default.tar");
 //! let archive = TarArchiveRef::new(archive).unwrap();