More crimes, but for Miri

Author: saethlin

library/core/src/intrinsics.rs

@@ -2617,8 +2617,9 @@ macro_rules! assert_unsafe_precondition {
         #[cfg(bootstrap)]
         let should_check = cfg!(debug_assertions);
 
+        // Turn assertions off in Miri, but otherwise check in codegen
         #[cfg(not(bootstrap))]
-        let should_check = ::core::intrinsics::debug_assertions();
+        let should_check = !cfg!(miri) && ::core::intrinsics::debug_assertions();
 
         if should_check {
             // allow non_snake_case to allow capturing const generics