--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/analyzer/pending-diagnostic.cc	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,83 @@
+/* Classes for analyzer diagnostics.
+   Copyright (C) 2019-2020 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/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tree.h"
+#include "intl.h"
+#include "diagnostic.h"
+#include "function.h"
+#include "analyzer/analyzer.h"
+#include "diagnostic-event-id.h"
+#include "analyzer/analyzer-logging.h"
+#include "analyzer/sm.h"
+#include "diagnostic-event-id.h"
+#include "analyzer/sm.h"
+#include "analyzer/pending-diagnostic.h"
+
+#if ENABLE_ANALYZER
+
+namespace ana {
+
+/* Generate a label_text by printing FMT.
+
+   Use a clone of the global_dc for formatting callbacks.
+
+   Use this evdesc::event_desc's m_colorize flag to control colorization
+   (so that e.g. we can disable it for JSON output).  */
+
+label_text
+evdesc::event_desc::formatted_print (const char *fmt, ...) const
+{
+  pretty_printer *pp = global_dc->printer->clone ();
+
+  pp_show_color (pp) = m_colorize;
+
+  text_info ti;
+  rich_location rich_loc (line_table, UNKNOWN_LOCATION);
+  va_list ap;
+  va_start (ap, fmt);
+  ti.format_spec = _(fmt);
+  ti.args_ptr = &ap;
+  ti.err_no = 0;
+  ti.x_data = NULL;
+  ti.m_richloc = &rich_loc;
+  pp_format (pp, &ti);
+  pp_output_formatted_text (pp);
+  va_end (ap);
+
+  label_text result = label_text::take (xstrdup (pp_formatted_text (pp)));
+  delete pp;
+  return result;
+}
+
+/* Return true if T1 and T2 are "the same" for the purposes of
+   diagnostic deduplication.  */
+
+bool
+pending_diagnostic::same_tree_p (tree t1, tree t2)
+{
+  return simple_cst_equal (t1, t2) == 1;
+}
+
+} // namespace ana
+
+#endif /* #if ENABLE_ANALYZER */