reject deallocation of read-only allocations

2021-05-23 11:53:23 +02:00 · 2021-05-23 11:53:23 +02:00 · 3bcba11c35
commit 3bcba11c35
parent 6e92fb4098
1 changed files with 3 additions and 0 deletions
--- a/compiler/rustc_mir/src/interpret/memory.rs
+++ b/compiler/rustc_mir/src/interpret/memory.rs
@ -321,6 +321,9 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> Memory<'mir, 'tcx, M> {
            }
        };

+        if alloc.mutability == Mutability::Not {
+            throw_ub_format!("deallocating immutable allocation {}", ptr.alloc_id);
+        }
        if alloc_kind != kind {
            throw_ub_format!(
                "deallocating {}, which is {} memory, using {} deallocation operation",