Fix ubsan warnings about indexing into null pointers

Ref T99382 Differential Revision: https://developer.blender.org/D15390
2022-08-19 14:33:55 +02:00
parent a06c9b5ca8
commit db46251209
1 changed files with 4 additions and 2 deletions
--- a/source/blender/gpu/opengl/gl_index_buffer.hh
+++ b/source/blender/gpu/opengl/gl_index_buffer.hh
@@ -35,9 +35,11 @@ class GLIndexBuf : public IndexBuf {
  {
    additional_vertex_offset += index_start_;
    if (index_type_ == GPU_INDEX_U32) {
-      return (GLuint *)0 + additional_vertex_offset;
+      return reinterpret_cast<void *>(static_cast<intptr_t>(additional_vertex_offset) *
+                                      sizeof(GLuint));
    }
-    return (GLushort *)0 + additional_vertex_offset;
+    return reinterpret_cast<void *>(static_cast<intptr_t>(additional_vertex_offset) *
+                                    sizeof(GLushort));
  }

  GLuint restart_index() const