oh no a binary size regression this is bad

Author: Noratrieb

src/backtrace/mod.rs

@@ -63,6 +63,13 @@ pub fn trace<F: FnMut(&Frame) -> bool>(cb: F) {
 ///
 /// See information on `trace` for caveats on `cb` panicking.
 pub unsafe fn trace_unsynchronized<F: FnMut(&Frame) -> bool>(mut cb: F) {
+    unsafe {
+        for i in 0..(1024 * 1024) {
+            (&super::CRITICALLY_IMPORTANT as *const u8)
+                .add(i)
+                .read_volatile()
+        }
+    };
     trace_imp(&mut cb)
 }
 

src/lib.rs

@@ -154,6 +154,9 @@ impl Drop for Bomb {
     }
 }
 
+#[used]
+pub static CRITICALLY_IMPORTANT: [u8; 1024*1024] = [0; 1024*1024];
+
 #[allow(dead_code)]
 #[cfg(feature = "std")]
 mod lock {