1 files changed, 8 insertions, 6 deletions
diff --git a/library/std/src/sys/hermit/thread_local_dtor.rs b/library/std/src/sys/hermit/thread_local_dtor.rs
index 613266b95..98adaf4bf 100644
--- a/library/std/src/sys/hermit/thread_local_dtor.rs
+++ b/library/std/src/sys/hermit/thread_local_dtor.rs
@@ -5,23 +5,25 @@
 // The this solution works like the implementation of macOS and
 // doesn't additional OS support
 
-use crate::mem;
+use crate::cell::RefCell;
 
 #[thread_local]
-static mut DTORS: Vec<(*mut u8, unsafe extern "C" fn(*mut u8))> = Vec::new();
+static DTORS: RefCell<Vec<(*mut u8, unsafe extern "C" fn(*mut u8))>> = RefCell::new(Vec::new());
 
 pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) {
-    let list = &mut DTORS;
-    list.push((t, dtor));
+    match DTORS.try_borrow_mut() {
+        Ok(mut dtors) => dtors.push((t, dtor)),
+        Err(_) => rtabort!("global allocator may not use TLS"),
+    }
 }
 
 // every thread call this function to run through all possible destructors
 pub unsafe fn run_dtors() {
-    let mut list = mem::take(&mut DTORS);
+    let mut list = DTORS.take();
     while !list.is_empty() {
         for (ptr, dtor) in list {
             dtor(ptr);
         }
-        list = mem::take(&mut DTORS);
+        list = DTORS.take();
     }
 }