From 3cf7ce0fd1dd3c4e55febeda5c78ed9df658a968 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Foucault?= <foucault.clem@gmail.com>
Date: Thu, 25 Sep 2025 09:43:22 +0200
Subject: [PATCH] Fix: Node: Integer overflow in GPU nodetree evaluation

This was caused by `stack_index` being stored as a `short`
even though the stack `index` inside `ntree_exec_begin` was
`int`.

Rel #146705

Pull Request: https://projects.blender.org/blender/blender/pulls/146733
---
 source/blender/makesdna/DNA_node_types.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index fbc208361b2..73f42e1dfa6 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -156,14 +156,14 @@ typedef struct bNodeSocket {
   void *default_value;
 
   /** Local stack index for "node_exec". */
-  short stack_index;
+  int stack_index;
   char display_shape;
 
   /* #AttrDomain used when the geometry nodes modifier creates an attribute for a group
    * output. */
   char attribute_domain;
 
-  char _pad[4];
+  char _pad[2];
 
   /** Custom dynamic defined label. */
   char label[/*MAX_NAME*/ 64];