From 64c7dff6e708e210f4d39120f9d4d1b487a52519 Mon Sep 17 00:00:00 2001
From: Ebuka Ezike <yerimyah1@gmail.com>
Date: Sun, 12 Oct 2025 16:11:29 +0100
Subject: [PATCH] [lldb] Only get child if m_storage and m_element_type is
 valid

This causes a crash because lldb-dap will check the first child to see if it is array like to lazy load the children.
---
 lldb/source/Plugins/Language/CPlusPlus/MsvcStlAtomic.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lldb/source/Plugins/Language/CPlusPlus/MsvcStlAtomic.cpp b/lldb/source/Plugins/Language/CPlusPlus/MsvcStlAtomic.cpp
index 3ec324577ac76..372b6c7afdd78 100644
--- a/lldb/source/Plugins/Language/CPlusPlus/MsvcStlAtomic.cpp
+++ b/lldb/source/Plugins/Language/CPlusPlus/MsvcStlAtomic.cpp
@@ -50,7 +50,7 @@ llvm::Expected<uint32_t> lldb_private::formatters::
 lldb::ValueObjectSP
 lldb_private::formatters::MsvcStlAtomicSyntheticFrontEnd::GetChildAtIndex(
     uint32_t idx) {
-  if (idx == 0)
+  if (idx == 0 && m_storage && m_element_type.IsValid())
     return m_storage->Cast(m_element_type)->Clone(ConstString("Value"));
   return nullptr;
 }