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diff --git a/gcc/diagnostic-context-rich-location.h b/gcc/diagnostic-context-rich-location.h
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+/* A rich_location subclass that lazily populates a diagnostic_path
+   with diagnostic context events, but only if the path is actually to be
+   used.
+   Copyright (C) 2025 Free Software Foundation, Inc.
+   Contributed by Qing Zhao<qing.zhao@oracle.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_DIAGNOSTIC_CONTEXT_RICH_LOCATION_H
+#define GCC_DIAGNOSTIC_CONTEXT_RICH_LOCATION_H
+
+#include "gcc-rich-location.h"
+#include "diagnostics/lazy-paths.h"
+#include "tree-logical-location.h"
+
+class lazy_diagnostic_context_path : public diagnostics::paths::lazy_path
+{
+public:
+  lazy_diagnostic_context_path (const tree_logical_location_manager
+				&logical_loc_mgr,
+				location_t location, gimple *stmt)
+  : diagnostics::paths::lazy_path (logical_loc_mgr),
+    m_logical_loc_mgr (logical_loc_mgr),
+    m_location (location), m_stmt (stmt)
+  {
+  }
+
+  std::unique_ptr<diagnostics::paths::path>
+  make_inner_path () const final override;
+  /* This method will be called on demand if a diagnostic is actually
+     emitted for this rich_location.  */
+
+  const tree_logical_location_manager &m_logical_loc_mgr;
+  location_t m_location;
+  gimple *m_stmt;
+};
+
+class rich_location_with_details : public gcc_rich_location
+{
+public:
+  rich_location_with_details (location_t location, gimple *stmt)
+  : gcc_rich_location (location),
+    m_lazy_diagnostic_context_path (m_logical_loc_mgr, location, stmt)
+  {
+    set_path (&m_lazy_diagnostic_context_path);
+  }
+
+  rich_location_with_details (location_t location, tree exp ATTRIBUTE_UNUSED)
+  : gcc_rich_location (location),
+    m_lazy_diagnostic_context_path (m_logical_loc_mgr, location, nullptr)
+  {
+  }
+
+private:
+  const tree_logical_location_manager m_logical_loc_mgr;
+  lazy_diagnostic_context_path m_lazy_diagnostic_context_path;
+};
+
+#endif // GCC_DIAGNOSTIC_CONTEXT_RICH_LOCATION_H