(gdb) bt full
#0  _wordcopy_fwd_aligned (dstp=47361830600112, srcp=47361829320864, len=2757) at wordcopy.c:59
        a0 = <value optimized out>
        a1 = <value optimized out>
#1  0x00002b1345e81cb0 in *__GI_memmove (dest=0x2b134916bdb0, src=<value optimized out>, len=22056) at memmove.c:73
        dstp = 47361830600112
        srcp = 47361829320864
#2  0x000000000040ca72 in copy_row (buf=0x7fff69e607f0, x=-5, y=549, width=5514, y2=607) at tilebuf.c:121
        c_from = (
    guchar *) 0x2b134916bdb0 "/>%�6E$�1A&�0?%�+5%�+6\"�+5%�0?%�1A&�6E$�/>%�7A'�6@\"�<I0�7D,�8B)�3=\036�9H2�08!�04\030�,6&�.=,�+4!�*3\034�2A-�9@+�@F,�=G%�?Q2�;S5�6G$�,7\037�7E-�1<\031�1B-�?K.�CN&�DR0�9A3�7E0�5C2�9?/�:C0�8A'�9?\"�5@-�5@-�8=(�<E4�9B%�"...
        c_to = (guchar *) 0x2b13490338a0 ""
        c_size = 22056
#3  0x000000000040cd62 in fix_bottom_boundary (buf=0x7fff69e607f0, y_hi=579) at tilebuf.c:236
        y = 607
#4  0x000000000040ce9a in fix_boundaries (buf=0x7fff69e607f0, source=0x7fff69e60910, first_time=0) at tilebuf.c:268
        x_lo = 0
        x_hi = 5455
        y_lo = 571
        y_hi = 579
#5  0x000000000040d1eb in shift_buf (buf=0x7fff69e607f0, source=0x7fff69e60910) at tilebuf.c:339
        x = 5568
        not_finished = 1
#6  0x0000000000406110 in convolve_image (source=0x7fff69e60910, sink=0x7fff69e608b0, sx=0, sy=0, width=5455,
    height=579, boundary_type=TB_BOUNDARY_MIRROR, mat=0x67b580, mat_size=11, progress_update=0x7fff69e608a0)
    at conv.c:433
        buf = {
  data = 0x2b13490aa010 "3E1�*7#�,9(�1>)�/?(�3@&�/?(�1>)�,9(�*7#�3E1�,>0�0='�.A1�0@'�-=\032�.>#�/:\037�7C'�2A(�-<'�+<'�1<$�-=(�6@#�2=$�1? �0<#�-:%�,6\031�)>2�0?*�9E&�2?0�.8#�2@,�+7 �,9\034�1C)�2B/�7C3�:C&�8L3�6? �2@'�*6\031�,8\030�05\030�+6#�*8%�"..., row_stride = 22056, border_width = 5, bpp = 4, x = 0, width = 5504, y = 576, height = 64, real_x = -5,
  real_width = 5514, real_y = 571, real_height = 133, y_limit = 579, first_time = 0,
  boundary_type = TB_BOUNDARY_MIRROR}
---Type <return> to continue, or q <return> to quit---
        x = 5504
        buf_start_y = 0
        total_tiles = 860
        tile_nr = 774
        ok = 1
#7  0x0000000000404fe7 in doit () at refocus.c:616
        source = {type = TP_DRAWABLE, x = 0, y = 0, width = 5455, height = 579, bpp = 4, has_alpha = 1, un = {drw = {
      drawable = 0x61fc10, pixel_rgn = {data = 0x0, drawable = 0x61fc10, bpp = 4, rowstride = 0, x = 0, y = 0,
        w = 5455, h = 579, dirty = 0, shadow = 0, process_count = 32767}}, prv = {dummy = 0x61fc10}}}
        sink = {type = TP_DRAWABLE, x = 0, y = 0, width = 5455, height = 579, bpp = 4, has_alpha = 1, un = {drw = {
      drawable = 0x61fc10, pixel_rgn = {data = 0x0, drawable = 0x61fc10, bpp = 4, rowstride = 0, x = 0, y = 0,
        w = 5455, h = 579, dirty = 1, shadow = 1, process_count = 32767}}, prv = {data = 0x61fc10 "\002",
      ntile_rows = 0, ntile_cols = 0, tiles = 0x61fc10}}}
        width = 5455
        height = 579
        update_progress_closure = {fun = 0x404e79 <gimp_progress_update_fun>, data = 0x0}
#8  0x0000000000403b65 in run (name=0x61e8e0 "plug_in_refocus", n_params=3, param=0x61e970,
    nreturn_vals=0x7fff69e60a9c, return_vals=0x7fff69e60a90) at refocus.c:192
        run_mode = GIMP_RUN_INTERACTIVE
        status = GIMP_PDB_SUCCESS
        values = {{type = GIMP_PDB_INT32, data = {d_int32 = 0, d_int16 = 0, d_int8 = 0 '\0', d_float = 0,
      d_string = 0x0, d_int32array = 0x0, d_int16array = 0x0, d_int8array = 0x0, d_floatarray = 0x0,
      d_stringarray = 0x0, d_color = {r = 0, g = 0, b = 0, a = 0}, d_region = {x = 0, y = 0, width = 0, height = 0},
      d_display = 0, d_image = 0, d_layer = 0, d_layer_mask = 0, d_channel = 0, d_drawable = 0, d_selection = 0,
      d_boundary = 0, d_path = 0, d_vectors = 0, d_unit = 0, d_parasite = {name = 0x0, flags = 0, size = 0,
        data = 0x0}, d_tattoo = 0, d_status = GIMP_PDB_EXECUTION_ERROR}}}
#9  0x00002b13415b7022 in gimp_main (info=<value optimized out>, argc=<value optimized out>,
    argv=<value optimized out>) at /usr/src/debian/work/build-area/gimp-2.4.0~rc3/./libgimp/gimp.c:1810
        basename = (gchar *) 0x610010 "\001"
        env_string = <value optimized out>
        __PRETTY_FUNCTION__ = "gimp_main"
#10 0x0000000000403968 in main (argc=6, argv=0x7fff69e60bc8) at refocus.c:100