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diff --git a/gcc/tree-pretty-print-markup.h b/gcc/tree-pretty-print-markup.h
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+/* Copyright (C) 2024 Free Software Foundation, Inc.
+   Contributed by David Malcolm <dmalcolm@redhat.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_TREE_PRETTY_PRINT_MARKUP_H
+#define GCC_TREE_PRETTY_PRINT_MARKUP_H
+
+#include "pretty-print-markup.h"
+#include "diagnostic-highlight-colors.h"
+
+namespace pp_markup {
+
+/* Concrete subclass of pp_markup::element.
+   Print a type in quotes with the given highlighting color.  */
+
+class element_quoted_type : public element
+{
+public:
+  element_quoted_type (tree type, const char *highlight_color)
+  : m_type (type),
+    m_highlight_color (highlight_color)
+  {
+  }
+
+  void add_to_phase_2 (context &ctxt) override
+  {
+    ctxt.begin_quote ();
+    ctxt.begin_highlight_color (m_highlight_color);
+
+    print_type (ctxt);
+
+    ctxt.end_highlight_color ();
+    ctxt.end_quote ();
+  }
+
+  void print_type (context &ctxt);
+
+private:
+  tree m_type;
+  const char *m_highlight_color;
+};
+
+/* Concrete subclass of pp_markup::element.
+   Print a type in quotes highlighted as the "expected" type.  */
+
+class element_expected_type : public element_quoted_type
+{
+public:
+  element_expected_type (tree type)
+  : element_quoted_type (type, highlight_colors::expected)
+  {
+  }
+};
+
+/* Concrete subclass of pp_markup::element.
+   Print a type in quotes highlighted as the "actual" type.  */
+
+class element_actual_type : public element_quoted_type
+{
+public:
+  element_actual_type (tree type)
+  : element_quoted_type (type, highlight_colors::actual)
+  {
+  }
+};
+
+} // namespace pp_markup
+
+#endif /* GCC_TREE_PRETTY_PRINT_MARKUP_H */