Make use of `ptr::null(_mut)` instead of casting zero

2 files changed, 2 insertions, 2 deletions

diff --git a/src/libstd/sys/wasi/args.rs b/src/libstd/sys/wasi/args.rs
index 9c8e59e4fb5..8b4b354d9fc 100644
--- a/src/libstd/sys/wasi/args.rs
+++ b/src/libstd/sys/wasi/args.rs
@@ -32,7 +32,7 @@ fn maybe_args() -> io::Result<Args> {
         let (mut argc, mut argv_buf_size) = (0, 0);
         cvt_wasi(libc::__wasi_args_sizes_get(&mut argc, &mut argv_buf_size))?;
 
-        let mut argc = vec![0 as *mut libc::c_char; argc];
+        let mut argc = vec![core::ptr::null_mut::<libc::c_char>(); argc];
         let mut argv_buf = vec![0; argv_buf_size];
         cvt_wasi(libc::__wasi_args_get(argc.as_mut_ptr(), argv_buf.as_mut_ptr()))?;
 
diff --git a/src/libstd/sys/wasm/thread_local_atomics.rs b/src/libstd/sys/wasm/thread_local_atomics.rs
index b408ad0d5c1..3dc0bb24553 100644
--- a/src/libstd/sys/wasm/thread_local_atomics.rs
+++ b/src/libstd/sys/wasm/thread_local_atomics.rs
@@ -11,7 +11,7 @@ struct ThreadControlBlock {
 impl ThreadControlBlock {
     fn new() -> ThreadControlBlock {
         ThreadControlBlock {
-            keys: [0 as *mut u8; MAX_KEYS],
+            keys: [core::ptr::null_mut(); MAX_KEYS],
         }
     }