1 files changed, 4 insertions, 0 deletions
diff --git a/runtime/debugger.cc b/runtime/debugger.cc
index d89ad5e..a0e978b 100644
--- a/runtime/debugger.cc
+++ b/runtime/debugger.cc
@@ -4382,6 +4382,10 @@ class HeapChunkContext {
       LOG(ERROR) << "Invalid class for managed heap object: " << o << " " << c;
       return HPSG_STATE(SOLIDITY_HARD, KIND_UNKNOWN);
     }
+    if (c->GetClass() == nullptr) {
+      LOG(ERROR) << "Null class of class " << c << " for object " << o;
+      return HPSG_STATE(SOLIDITY_HARD, KIND_UNKNOWN);
+    }
     if (c->IsClassClass()) {
       return HPSG_STATE(SOLIDITY_HARD, KIND_CLASS_OBJECT);
     }