libchamplain on Maemo/N900 for Map Buddy

[Alban Crequy <alban crequy collabora co uk>]

Hi,

Map Buddy on Maemo is using libchamplain 0.4.4 and I get a crash at
startup sometimes. I wonder if it is a known problem because the code
has changed in newer unstable versions.

#0  view_load_visible_tiles (view=0xbe030) at champlain-view.c:2280
#1  0x400ac7f0 in update_viewport (view=0xbe030, x=
#2  0x400acf2c in viewport_pos_changed_cb (gobject=<value optimized
    out>, arg1=<value optimized out>, view=0xbe030) at  
    champlain-view.c:1537
#3  0x40f4d27c in g_cclosure_marshal_VOID__PARAM ()
    from /usr/lib/libgobject-2.0.so.0
#4  0x40f3f848 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#5  0x40f56500 in ?? () from /usr/lib/libgobject-2.0.so.0
#6 0x40f56500 in ?? () from /usr/lib/libgobject-2.0.so.0

priv->map is NULL:
(gdb) p *priv
$3 = {stage = 0xc0070, factory = 0xb6978, map_source = 0x111f08,
scroll_mode = CHAMPLAIN_SCROLL_MODE_KINETIC, zoom_level = 0,
min_zoom_level = 0, max_zoom_level = 18, longitude = -5.625, latitude =
50.736454010009766, anchor = {x = 0, y = 0, z = 0}, anchor_zoom_level =
0, map = 0x0, finger_scroll = 0xc3018, viewport = 0xc1030, map_layer =
0xc01b0, viewport_size = {x = -145, y = 0, width = 800, height = 354},
user_layers = 0xc02f0, keep_center_on_resize = 1, zoom_on_double_click
= 1, show_license = 1, license_actor = 0xcd628, license_text = 0x0,
scale_actor = 0xc0570, show_scale = 1, scale_unit = CHAMPLAIN_UNIT_KM,
max_scale_width = 100, state = CHAMPLAIN_STATE_DONE, goto_context =
0x0, polygon_redraw_id = 0, polygons = 0x0, polygon_layer = 0xc0430}

Is there a patch to backport in the 0.4 series?

Cheers
Alban