make use of pointer::is_null

2 files changed, 8 insertions, 5 deletions

diff --git a/src/libstd/sys/hermit/os.rs b/src/libstd/sys/hermit/os.rs
index 5999fdd4f8d..78eabf8f81e 100644
--- a/src/libstd/sys/hermit/os.rs
+++ b/src/libstd/sys/hermit/os.rs
@@ -6,7 +6,6 @@ use crate::io;
 use crate::marker::PhantomData;
 use crate::memchr;
 use crate::path::{self, PathBuf};
-use crate::ptr;
 use crate::str;
 use crate::sync::Mutex;
 use crate::sys::hermit::abi;
@@ -77,13 +76,17 @@ pub fn init_environment(env: *const *const i8) {
     unsafe {
         ENV = Some(Mutex::new(HashMap::new()));
 
+        if env.is_null() {
+            return;
+        }
+
         let mut guard = ENV.as_ref().unwrap().lock().unwrap();
         let mut environ = env;
-        while environ != ptr::null() && *environ != ptr::null() {
+        while !(*environ).is_null() {
             if let Some((key, value)) = parse(CStr::from_ptr(*environ).to_bytes()) {
                 guard.insert(key, value);
             }
-            environ = environ.offset(1);
+            environ = environ.add(1);
         }
     }
 
diff --git a/src/libstd/sys/hermit/thread_local.rs b/src/libstd/sys/hermit/thread_local.rs
index ba967c7676c..c6f8adb2162 100644
--- a/src/libstd/sys/hermit/thread_local.rs
+++ b/src/libstd/sys/hermit/thread_local.rs
@@ -18,14 +18,14 @@ static KEYS_LOCK: Mutex = Mutex::new();
 static mut LOCALS: *mut BTreeMap<Key, *mut u8> = ptr::null_mut();
 
 unsafe fn keys() -> &'static mut BTreeMap<Key, Option<Dtor>> {
-    if KEYS == ptr::null_mut() {
+    if KEYS.is_null() {
         KEYS = Box::into_raw(Box::new(BTreeMap::new()));
     }
     &mut *KEYS
 }
 
 unsafe fn locals() -> &'static mut BTreeMap<Key, *mut u8> {
-    if LOCALS == ptr::null_mut() {
+    if LOCALS.is_null() {
         LOCALS = Box::into_raw(Box::new(BTreeMap::new()));
     }
     &mut *LOCALS