Hi, I don't how to start and if this is useful at all.
On my ppc G4 gentoo, I have problem with cairo for month now since 1.10.
At the beginning of may 2011, I tried with the git HEAD and it gave me back thunderbird and firefox. But then I had to upgrade for Qt upgrade to 4.8 but this brought crashes.

So, I tried running tests to see what I could find.
They give a lot of crashes, so many that I am not sure this report can be useful as it looks like I have a very cranky system (but KDE-4.6.5 is run quite fine on it). Some are assert failures, some are not.

Launching : make run TOOL=gdb
gives me a crash :
#0  _cairo_polygon_limit (polygon=0xbfffc458, limits=0x0, num_limits=1) at cairo-polygon.c:93
#1  0x0ff0ef50 in _cairo_polygon_init (polygon=<optimized out>, limits=<optimized out>, num_limits=<optimized out>)
    at cairo-polygon.c:137
#2  0x0fefcab8 in _cairo_path_fixed_fill_to_traps (path=0x1015aef4, fill_rule=CAIRO_FILL_RULE_WINDING, 
    tolerance=<optimized out>, traps=0xbfffc858) at cairo-path-fill.c:258
#3  0x0ff8a458 in base_compositor_fill (_compositor=<optimized out>, extents=0xbfffcb28, path=0x1015aef4, 
    fill_rule=CAIRO_FILL_RULE_WINDING, tolerance=<optimized out>, antialias=<optimized out>)
    at test-base-compositor-surface.c:772
#4  0x0fedf96c in _cairo_compositor_fill (compositor=0xffb1c9c, surface=<optimized out>, op=<optimized out>, 
    source=<optimized out>, path=0x1015aef4, fill_rule=CAIRO_FILL_RULE_WINDING, tolerance=0.10000000000000001, 
    antialias=CAIRO_ANTIALIAS_DEFAULT, clip=<optimized out>) at cairo-compositor.c:167
#5  0x0ff282d8 in _cairo_surface_fill (surface=0x1015aae0, op=CAIRO_OPERATOR_OVER, source=0xbfffce58, 
    path=0x1015aef4, fill_rule=CAIRO_FILL_RULE_WINDING, tolerance=0.10000000000000001, 
    antialias=CAIRO_ANTIALIAS_DEFAULT, clip=0x0) at cairo-surface.c:1987
#6  0x0fee9234 in _cairo_gstate_fill (gstate=0x1015ad90, path=0x1015aef4) at cairo-gstate.c:1268
#7  0x0fed8630 in *INT_cairo_fill_preserve (cr=0x1015ac10) at cairo.c:2129
#8  0x1000bc04 in draw (cr=0x1015ac10, width=<optimized out>, height=<optimized out>) at a1-bug.c:47
#9  0x10008984 in cairo_test_for_target (ctx=0xbfffd134, target=0x10150754, dev_offset=<optimized out>, 
    similar=<optimized out>) at cairo-test.c:920
#10 0x100099e4 in _cairo_test_context_run_for_target (ctx=0xbfffd134, target=0x10150754, similar=0, dev_offset=0)
    at cairo-test.c:1523
#11 0x1000b244 in _cairo_test_runner_draw (device_offset=<optimized out>, similar=0, target=<optimized out>, 
    ctx=0xbfffd134, runner=<optimized out>) at cairo-test-runner.c:254

gcc is 4.5.3

By the way, how can I get an unoptimized-out test binary ?

Thanks in advance.