bug#6031: gcc 4.5 breaks optimized builds of emacs

[Eli Zaretskii]

> From: Elias Pipping <pipping.elias@googlemail.com>
> Date: Sun, 25 Apr 2010 01:44:14 +0200
> Cc: 
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000406015 in fill_up_glyph_row_area_with_spaces
> (row=0x111e320, area=2) at dispnew.c:2910
> 2910            *text++ = space_glyph;

Please show the values of the following variables in frame 0:

  (gdb) p text
  (gdb) p end
  (gdb) p row->used[area]

Thanks.