From cc036d7b752e9ff6a9ad7111e697b1bf0dea4dd5 Mon Sep 17 00:00:00 2001
From: Jonas Hahnfeld <jonas.hahnfeld@cern.ch>
Date: Wed, 13 May 2026 16:39:06 +0200
Subject: [PATCH] [cling] Disable pointer check for Experimental namespace

This also serves as a testbed for turning it off for the entire
ROOT namespace.

(cherry picked from commit f3c0f48c5c3f54959e729afcf4fb31b640fac181)
---
 .../cling/lib/Interpreter/NullDerefProtectionTransformer.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/interpreter/cling/lib/Interpreter/NullDerefProtectionTransformer.cpp b/interpreter/cling/lib/Interpreter/NullDerefProtectionTransformer.cpp
index 9b340c082b629..247fc5561dcfc 100644
--- a/interpreter/cling/lib/Interpreter/NullDerefProtectionTransformer.cpp
+++ b/interpreter/cling/lib/Interpreter/NullDerefProtectionTransformer.cpp
@@ -229,6 +229,11 @@ class PointerCheckInjector : public RecursiveASTVisitor<PointerCheckInjector> {
   static bool hasPtrCheckDisabledInContext(Sema *S, const Decl* D) {
     if (isa<TranslationUnitDecl>(D))
       return false;
+    if (auto *NS = dyn_cast<NamespaceDecl>(D)) {
+      if (NS->getName() == "Experimental") {
+        return true;
+      }
+    }
     for (const auto *Ann : D->specific_attrs<clang::AnnotateAttr>()) {
       if (Ann->getAnnotation() == "__cling__ptrcheck(off)")
         return true;