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Date: Mon, 12 Apr 2004 00:38:00 -0000
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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug debug/14919] [3.3 Regression]: DW_AT_comp_dir is missing
X-Bugzilla-Reason: CC
X-SW-Source: 2004-04/txt/msg00952.txt.bz2
List-Id: <gcc-bugs.sourceware.org>


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-11 23:17 -------
This has not changed since:
1.126        (jason    23-Nov-99):   if (wd != NULL && filename[0] != DIR_SEPARATOR)
1.126        (jason    23-Nov-99):     add_AT_string (die, DW_AT_comp_dir, wd);

So I do not know how 3.2 worked at all.

3.4 changed it to:
   if (filename[0] != DIR_SEPARATOR)
    add_comp_dir_attribute (comp_unit_die);
  else if (get_AT (comp_unit_die, DW_AT_comp_dir) == NULL)
    {
      size_t i;
      for (i = 1; i < VARRAY_ACTIVE_SIZE (file_table); i++)
        if (VARRAY_CHAR_PTR (file_table, i)[0] != DIR_SEPARATOR
            /* Don't add cwd for <built-in>.  */
            && VARRAY_CHAR_PTR (file_table, i)[0] != '<')
          {
            add_comp_dir_attribute (comp_unit_die);
            break;
          }
    }

This was changed with:
2003-01-16  Richard Henderson  <rth@redhat.com>

        * dwarf2out.c (struct file_table): Remove.
        (FILE_TABLE_INCREMENT): Remove.
        (file_table): Make a varray; mark for GC.  Update all users.
        (file_table_last_lookup_index): Extract from struct file_table.
        (output_file_names): Fix unsigned compare warnings.
        (add_name_attribute): Remove inline marker.
        (add_comp_dir_attribute): Split out from gen_compile_unit_die.
        (lookup_filename): Don't manage size of file_table.
        (init_file_table): Allocate file_table with GC.
        (dwarf2out_init): Don't record main_input_filename here.
        (dwarf2out_finish): Do it here instead.

See <http://gcc.gnu.org/ml/gcc-patches/2003-01/msg01195.html> for the patch but this was 
needed for PCH only so something else has changed in the compiler, I am starting to think the 
preprocessor changed.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14919