Patch-Source: https://github.com/BitOne/php-meminfo/pull/139
commit df1e00544587a9d1dbcb70858dbd2e4677424b1c
Author: Andy Postnikov <apostnikov@gmail.com>
Date:   Mon Feb 16 02:31:29 2026 +0100

    Fix PHP 8.5 compatibility: segfault and IS_UNDEF crashes
    
    Restore EG(current_execute_data) after walking execution frames in
    meminfo_browse_exec_frames(), skip IS_UNDEF zvals after IS_INDIRECT
    dereferencing, and safely extract object pointer in frame label builder.
    Also fix dynamic property deprecation in test for PHP 8.2+.

diff --git a/extension/meminfo.c b/extension/meminfo.c
index b91b5b5..e8f1c51 100644
--- a/meminfo.c
+++ b/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;
 }
 
 /**
@@ -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);
         }
@@ -311,6 +320,10 @@ 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);
     }
@@ -447,7 +460,11 @@ 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/tests/bug-github-76_children_items_not_linked_php7.phpt
+++ b/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;
     }