From: Jakub Jirutka <jakub@jirutka.cz>
Date: Sat, 15 Jul 2023 21:29:34 +0200
Subject: [PATCH] Detect stack overflow in remaining_stack()

See https://github.com/rust-lang/stacker/pull/51

--- a/vendor/stacker/src/lib.rs
+++ b/vendor/stacker/src/lib.rs
@@ -89,7 +89,12 @@
 /// to determine whether a stack switch should be made or not.
 pub fn remaining_stack() -> Option<usize> {
     let current_ptr = current_stack_ptr();
-    get_stack_limit().map(|limit| current_ptr - limit)
+    get_stack_limit().map(|limit| {
+        if current_ptr < limit {
+            panic!("stack overflow!");
+        }
+        current_ptr - limit
+    })
 }
 
 psm_stack_information! (