[Webkit-unassigned] [Bug 142334] [GTK] Apps Using Webkit Under Wayland Do Not Render Pages (GNOME 3.15)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=142334

--- Comment #3 from Zan Dobersek <zan at falconsigh.net> ---
A crash is occurring on maps.google.com. Only reproducible under Wayland.

Backtrace:
#0  _fill_xrgb32_lerp_opaque_spans (abstract_renderer=0x7ffcc3c5dc90, y=110, h=0, spans=0x1baee60, num_spans=8) at cairo-image-compositor.c:2249
#1  0x00007f11a15bd196 in blit_a8 (xmax=101, xmin=0, height=1, y=110, spans=0x1baee50, renderer=0x7ffcc3c5dc90, cells=<optimized out>) at cairo-tor-scan-converter.c:1635
#2  glitter_scan_converter_render (renderer=0x7ffcc3c5dc90, antialias=1, winding_mask=<optimized out>, converter=<optimized out>) at cairo-tor-scan-converter.c:1786
#3  _cairo_tor_scan_converter_generate (converter=0x19faae0, renderer=0x7ffcc3c5dc90) at cairo-tor-scan-converter.c:1849
#4  0x00007f11a15afc99 in composite_polygon (extents=extents at entry=0x7ffcc3c5f5a0, polygon=polygon at entry=0x7ffcc3c5f160, fill_rule=fill_rule at entry=CAIRO_FILL_RULE_WINDING, 
    antialias=antialias at entry=CAIRO_ANTIALIAS_DEFAULT, compositor=0x7f11a1868780 <spans>, compositor=0x7f11a1868780 <spans>) at cairo-spans-compositor.c:801
#5  0x00007f11a15b066a in clip_and_composite_polygon (compositor=compositor at entry=0x7f11a1868780 <spans>, extents=extents at entry=0x7ffcc3c5f5a0, polygon=polygon at entry=0x7ffcc3c5f160, 
    fill_rule=CAIRO_FILL_RULE_WINDING, antialias=antialias at entry=CAIRO_ANTIALIAS_DEFAULT) at cairo-spans-compositor.c:967
#6  0x00007f11a15b11f7 in _cairo_spans_compositor_stroke (_compositor=0x7f11a1868780 <spans>, extents=0x7ffcc3c5f5a0, path=<optimized out>, style=0x7ffcc3c5f9b0, ctm=0x7ffcc3c5f9e0, 
    ctm_inverse=0x7ffcc3c5fa10, tolerance=0.10000000000000001, antialias=CAIRO_ANTIALIAS_DEFAULT) at cairo-spans-compositor.c:1083
#7  0x00007f11a156c1ee in _cairo_compositor_stroke (compositor=0x7f11a1868780 <spans>, surface=0x1d85000, op=CAIRO_OPERATOR_CLEAR, source=0xbe00ac, path=0xe46768, style=0x7ffcc3c5f9b0, 
    ctm=0x7ffcc3c5f9e0, ctm_inverse=0x7ffcc3c5fa10, tolerance=-0, antialias=CAIRO_ANTIALIAS_DEFAULT, clip=0x0) at cairo-compositor.c:157
#8  0x00007f11a157d302 in _cairo_image_surface_stroke (abstract_surface=<optimized out>, op=<optimized out>, source=<optimized out>, path=<optimized out>, style=<optimized out>, 
    ctm=<optimized out>, ctm_inverse=0x7ffcc3c5fa10, tolerance=<optimized out>, antialias=CAIRO_ANTIALIAS_DEFAULT, clip=0x0) at cairo-image-surface.c:964
#9  0x00007f11a15b4556 in _cairo_surface_stroke (surface=0xc99930, op=CAIRO_OPERATOR_OVER, source=0x7ffcc3c5fa40, path=0xe46768, stroke_style=0x7ffcc3c5f9b0, ctm=0x7ffcc3c5f9e0, 
    ctm_inverse=0x7ffcc3c5fa10, tolerance=0.10000000000000001, antialias=CAIRO_ANTIALIAS_DEFAULT, clip=0x0) at cairo-surface.c:2270
#10 0x00007f11a157422a in _cairo_gstate_stroke (gstate=0xee, path=0x1d85000, path at entry=0xe46768) at cairo-gstate.c:1194
#11 0x00007f11a156dbc9 in _cairo_default_context_stroke (abstract_cr=0xe46400) at cairo-default-context.c:1010
#12 0x00007f11a15670b5 in INT_cairo_stroke (cr=0xee) at cairo.c:2150
#13 0x00007f11a47ce171 in WebCore::CanvasRenderingContext2D::strokeInternal(WebCore::Path const&) () from /data/webkit/git/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#14 0x00007f11a506529b in WebCore::jsCanvasRenderingContext2DPrototypeFunctionStroke(JSC::ExecState*) () from /data/webkit/git/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#15 0x00007f118dffe1a8 in ?? ()
#16 0x00007ffcc3c5fdc0 in ?? ()
#17 0x00007f114e35a68c in ?? ()
#18 0x0000000000000000 in ?? ()

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