diff --git a/extension/meminfo.c b/extension/meminfo.c
index b91b5b5..e6273af 100644
--- a/extension/meminfo.c
+++ b/extension/meminfo.c
@@ -90,9 +90,11 @@ PHP_FUNCTION(meminfo_dump)
  */
 void meminfo_browse_exec_frames(php_stream *stream,  HashTable *visited_items, int *first_element)
 {
-    zend_execute_data *exec_frame, *prev_frame;
+    zend_execute_data *exec_frame;
+    zend_execute_data *original_execute_data;
     zend_array *p_symbol_table;
 
+    original_execute_data = EG(current_execute_data);
     exec_frame = EG(current_execute_data);
 
     char frame_label[500];
@@ -122,6 +124,8 @@ void meminfo_browse_exec_frames(php_stream *stream,  HashTable *visited_items, i
         }
         exec_frame = exec_frame->prev_execute_data;
     }
+
+    EG(current_execute_data) = original_execute_data;
 }
 
 /**
@@ -192,7 +196,7 @@ void meminfo_browse_zvals_from_symbol_table(php_stream *stream, char* frame_labe
     HashPosition pos;
 
     zend_string *key;
-    zend_long index;
+    zend_ulong index;
 
     zend_hash_internal_pointer_reset_ex(p_symbol_table, &pos);
 
@@ -246,6 +250,11 @@ void meminfo_hash_dump(php_stream *stream, HashTable *ht, zend_bool is_object, H
             zval = Z_INDIRECT_P(zval);
         }
 
+        if (Z_TYPE_P(zval) == IS_UNDEF) {
+            zend_hash_move_forward_ex(ht, &pos);
+            continue;
+        }
+
         if (Z_ISREF_P(zval)) {
             ZVAL_DEREF(zval);
         }
@@ -288,7 +297,9 @@ void meminfo_hash_dump(php_stream *stream, HashTable *ht, zend_bool is_object, H
 
                 break;
             case HASH_KEY_IS_LONG:
-                php_stream_printf(stream, "            \"%ld\":\"%s\"", num_key, zval_id);
+                php_stream_printf(stream, "            \"" ZEND_ULONG_FMT "\":\"%s\"", num_key, zval_id);
+                break;
+            default:
                 break;
         }
 
@@ -311,6 +322,10 @@ void meminfo_zval_dump(php_stream * stream, char * frame_label, zend_string * sy
         zv = Z_INDIRECT_P(zv);
     }
 
+    if (Z_TYPE_P(zv) == IS_UNDEF) {
+        return;
+    }
+
     if (Z_ISREF_P(zv)) {
         ZVAL_DEREF(zv);
     }
@@ -333,7 +348,7 @@ void meminfo_zval_dump(php_stream * stream, char * frame_label, zend_string * sy
 
     php_stream_printf(stream, "    \"%s\" : {\n", zval_identifier);
     php_stream_printf(stream, "        \"type\" : \"%s\",\n", zend_get_type_by_const(Z_TYPE_P(zv)));
-    php_stream_printf(stream, "        \"size\" : \"%ld\",\n", meminfo_get_element_size(zv));
+    php_stream_printf(stream, "        \"size\" : \"" ZEND_ULONG_FMT "\",\n", meminfo_get_element_size(zv));
 
     if (frame_label) {
         zend_string * escaped_frame_label;
@@ -447,7 +462,11 @@ void meminfo_build_frame_label(char* frame_label, int frame_label_len, zend_exec
     zend_object *object;
     zend_execute_data *ptr;
 
-    object = Z_OBJ(frame->This);
+    if (Z_TYPE(frame->This) == IS_OBJECT) {
+        object = Z_OBJ(frame->This);
+    } else {
+        object = NULL;
+    }
     ptr = frame->prev_execute_data;
 
     if (frame->func) {
diff --git a/extension/tests/bug-github-76_children_items_not_linked_php7.phpt b/extension/tests/bug-github-76_children_items_not_linked_php7.phpt
index 676c7e6..12aa37f 100644
--- a/extension/tests/bug-github-76_children_items_not_linked_php7.phpt
+++ b/extension/tests/bug-github-76_children_items_not_linked_php7.phpt
@@ -9,6 +9,7 @@ Check that all children items are properly linked through their identifiers
 <?php
     $dump = fopen('php://memory', 'rw');
 
+    #[AllowDynamicProperties]
     class MyClass {
         public $myDeclaredVar;
     }