diff --git a/src/header/sys_uio/mod.rs b/src/header/sys_uio/mod.rs
index ddd714ab17..0b99c7b8e8 100644
--- a/src/header/sys_uio/mod.rs
+++ b/src/header/sys_uio/mod.rs
@@ -25,7 +25,7 @@ pub struct iovec {
 
 impl iovec {
     unsafe fn to_slice(&self) -> &mut [u8] {
-        unsafe { slice::from_raw_parts_mut(self.iov_base as *mut u8, self.iov_len as usize) }
+        unsafe { slice::from_raw_parts_mut(self.iov_base.cast::<u8>(), self.iov_len) }
     }
 }
 
@@ -54,7 +54,7 @@ pub unsafe extern "C" fn preadv(
     iovcnt: c_int,
     offset: off_t,
 ) -> ssize_t {
-    if iovcnt < 0 || iovcnt > IOV_MAX {
+    if !(0..=IOV_MAX).contains(&iovcnt) {
         platform::ERRNO.set(errno::EINVAL);
         return -1;
     }
@@ -62,7 +62,7 @@ pub unsafe extern "C" fn preadv(
     let iovs = unsafe { slice::from_raw_parts(iov, iovcnt as usize) };
     let mut vec = unsafe { gather(iovs) };
 
-    let ret = unsafe { unistd::pread(fd, vec.as_mut_ptr() as *mut c_void, vec.len(), offset) };
+    let ret = unsafe { unistd::pread(fd, vec.as_mut_ptr().cast::<c_void>(), vec.len(), offset) };
 
     unsafe { scatter(iovs, vec) };
 
@@ -77,7 +77,7 @@ pub unsafe extern "C" fn pwritev(
     iovcnt: c_int,
     offset: off_t,
 ) -> ssize_t {
-    if iovcnt < 0 || iovcnt > IOV_MAX {
+    if !(0..=IOV_MAX).contains(&iovcnt) {
         platform::ERRNO.set(errno::EINVAL);
         return -1;
     }
@@ -85,13 +85,13 @@ pub unsafe extern "C" fn pwritev(
     let iovs = unsafe { slice::from_raw_parts(iov, iovcnt as usize) };
     let vec = unsafe { gather(iovs) };
 
-    unsafe { unistd::pwrite(fd, vec.as_ptr() as *const c_void, vec.len(), offset) }
+    unsafe { unistd::pwrite(fd, vec.as_ptr().cast::<c_void>(), vec.len(), offset) }
 }
 
 /// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/readv.html>.
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn readv(fd: c_int, iov: *const iovec, iovcnt: c_int) -> ssize_t {
-    if iovcnt < 0 || iovcnt > IOV_MAX {
+    if !(0..=IOV_MAX).contains(&iovcnt) {
         platform::ERRNO.set(errno::EINVAL);
         return -1;
     }
@@ -99,7 +99,7 @@ pub unsafe extern "C" fn readv(fd: c_int, iov: *const iovec, iovcnt: c_int) -> s
     let iovs = unsafe { slice::from_raw_parts(iov, iovcnt as usize) };
     let mut vec = unsafe { gather(iovs) };
 
-    let ret = unsafe { unistd::read(fd, vec.as_mut_ptr() as *mut c_void, vec.len()) };
+    let ret = unsafe { unistd::read(fd, vec.as_mut_ptr().cast::<c_void>(), vec.len()) };
 
     unsafe { scatter(iovs, vec) };
 
@@ -109,7 +109,7 @@ pub unsafe extern "C" fn readv(fd: c_int, iov: *const iovec, iovcnt: c_int) -> s
 /// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/writev.html>.
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn writev(fd: c_int, iov: *const iovec, iovcnt: c_int) -> ssize_t {
-    if iovcnt < 0 || iovcnt > IOV_MAX {
+    if !(0..=IOV_MAX).contains(&iovcnt) {
         platform::ERRNO.set(errno::EINVAL);
         return -1;
     }
@@ -117,5 +117,5 @@ pub unsafe extern "C" fn writev(fd: c_int, iov: *const iovec, iovcnt: c_int) ->
     let iovs = unsafe { slice::from_raw_parts(iov, iovcnt as usize) };
     let vec = unsafe { gather(iovs) };
 
-    unsafe { unistd::write(fd, vec.as_ptr() as *const c_void, vec.len()) }
+    unsafe { unistd::write(fd, vec.as_ptr().cast::<c_void>(), vec.len()) }
 }
diff --git a/src/header/sys_un/mod.rs b/src/header/sys_un/mod.rs
index cbc2d73c55..2f6d430512 100644
--- a/src/header/sys_un/mod.rs
+++ b/src/header/sys_un/mod.rs
@@ -13,8 +13,8 @@ pub struct sockaddr_un {
 
 impl sockaddr_un {
     pub fn path_offset(&self) -> usize {
-        let base = self as *const _ as usize;
-        let path = &self.sun_path as *const _ as usize;
+        let base = core::ptr::from_ref(self) as usize;
+        let path = &raw const self.sun_path as usize;
         log::trace!("base: {:#X}, path: {:#X}", base, path);
         path - base
     }
diff --git a/src/header/tar/mod.rs b/src/header/tar/mod.rs
index 1f61bea2e1..4b575f3e87 100644
--- a/src/header/tar/mod.rs
+++ b/src/header/tar/mod.rs
@@ -142,7 +142,7 @@ impl TarHeader {
         let mut header_copy = *self;
         header_copy.chksum.fill(b' ');
         let bytes =
-            unsafe { slice::from_raw_parts(&header_copy as *const _ as *const u8, HEADER_SIZE) };
+            unsafe { slice::from_raw_parts((&raw const header_copy).cast::<u8>(), HEADER_SIZE) };
         bytes.iter().map(|&b| b as usize).sum()
     }
 }
diff --git a/src/platform/mod.rs b/src/platform/mod.rs
index 3bcb826463..a61c6a2c00 100644
--- a/src/platform/mod.rs
+++ b/src/platform/mod.rs
@@ -84,7 +84,7 @@ pub trait WriteByte: fmt::Write {
     fn write_u8(&mut self, byte: u8) -> fmt::Result;
 }
 
-impl<'a, W: WriteByte> WriteByte for &'a mut W {
+impl<W: WriteByte> WriteByte for &mut W {
     fn write_u8(&mut self, byte: u8) -> fmt::Result {
         (**self).write_u8(byte)
     }
diff --git a/src/platform/types.rs b/src/platform/types.rs
index b980501d93..e0b925a3b7 100644
--- a/src/platform/types.rs
+++ b/src/platform/types.rs
@@ -1,7 +1,5 @@
 //! C data types for this platform.
 
-use core::i32;
-
 // Use repr(u8) as LLVM expects `void*` to be the same as `i8*` to help enable
 // more optimization opportunities around it recognizing things like
 // malloc/free.