Re: Does gdb 5.2 support gcc 3.1.1 on Linux/mips?

["H . J . Lu" <hjl at lucon dot org>]

Ok, it does look like a linker bug. For Linux/mipsel:

# readelf -S ~/tmp/s.o| grep .debug_str
  [26] .debug_str        MIPS_DWARF      00000000 00103f 000a96 01  MS  0   0 1
# readelf -S ~/tmp/s| grep .debug_str
[30] .debug_str        MIPS_DWARF      00000000 002048 000a2a 01  MS  0   0  1

Please note that on Linux/mipsel, the .debug_str section type is
MIPS_DWARF, not like PROGBITS on Linux/x86. Also it is marked "MS".
Somehow, linker failed to handle it and gdb complained:

3733          error ("DW_FORM_strp pointing outside of .debug_str section");
(top-gdb) list
3728          error ("DW_FORM_strp used without .debug_str section");
3729          return NULL;
3730        }
3731      if (str_offset >= dwarf_str_size)
3732        {
3733          error ("DW_FORM_strp pointing outside of .debug_str section");
3734          return NULL;
3735        }
3736      gdb_assert (HOST_CHAR_BIT == 8);
3737      if (dwarf_str_buffer[str_offset] == '\0')
(top-gdb) print str_offset                
$9 = 2617
(top-gdb) print dwarf_str_size
$10 = 2602

Jakub, it looks like a SHF_MERGE related bug. Any ideas?

Thanks.



H.J.