diff --git a/libstdc++-v3/include/std/stop_token b/libstdc++-v3/include/std/stop_token
index 76aef78a7ef..c90fc786b63 100644
--- a/libstdc++-v3/include/std/stop_token
+++ b/libstdc++-v3/include/std/stop_token
@@ -395,6 +395,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     {
       _Stop_state_ref() = default;
 
+      [[__gnu__::__access__(__none__, 2)]]
       explicit
       _Stop_state_ref(const stop_source&)
       : _M_ptr(new _Stop_state_t())
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_source/109339.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_source/109339.cc
new file mode 100644
index 00000000000..eea614eef80
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_source/109339.cc
@@ -0,0 +1,10 @@
+// { dg-options "-Wmaybe-uninitialized -Og -std=gnu++20" }
+// { dg-do compile { target c++20 } }
+
+#include <stop_token>
+
+int main()
+{
+  std::stop_source ss;
+ // { dg-bogus "uninitialized" "PR 109339" { target *-*-* } 0 }
+}