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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug preprocessor/44652] Column numbers in error messages are wrong
Date: Thu, 02 Sep 2021 02:07:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D44652

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
              where =3D linemap_included_from (map);
              map =3D linemap_included_from_linemap (line_table, map);
              bool is_module =3D MAP_MODULE_P (map);
              s.file =3D LINEMAP_FILE (map);
              s.line =3D SOURCE_LINE (map, where);
              int col =3D -1;
              if (first && context->show_column)
                {
                  s.column =3D SOURCE_COLUMN (map, where);
                  col =3D diagnostic_converted_column (context, s);
                }

first is true so the column info must be missing from the preprocessor.=