I think the issue will be:
diff --git a/src/sna/gen4_render.c b/src/sna/gen4_render.c
index 00518d4..d08d762 100644
--- a/src/sna/gen4_render.c
+++ b/src/sna/gen4_render.c
@@ -654,9 +654,12 @@ start:
goto flush;
}
- if (unlikely(sna->render.vertex_offset == 0 &&
- !gen4_rectangle_begin(sna, op)))
- goto flush;
+ if (unlikely(sna->render.vertex_offset == 0)) {
+ if (!gen4_rectangle_begin(sna, op))
+ goto flush;
+ else
+ goto start;
+ }
assert(op->floats_per_rect >= vertex_space(sna));
assert(rem <= vertex_space(sna));
--
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https://bugs.launchpad.net/bugs/1124576
Title:
Xorg crashed after feeding nbox=0 to trapezoid emit_boxes()
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