an assertion failed in function _cairo_arc_in_direction in file cairo-arc.c:189.
There is an assertion in function _cairo_arc_in_direction in file cairo-arc.c:189.
186 if (cairo_status (cr))
187 return;
188
→ 189 assert (angle_max >= angle_min); // assert failed.
190
191 if (angle_max - angle_min > 2 * M_PI * MAX_FULL_CIRCLES) {
192 angle_max = fmod (angle_max - angle_min, 2 * M_PI);
193 angle_min = fmod (angle_min, 2 * M_PI);
194 angle_max += angle_min + 2 * M_PI * MAX_FULL_CIRCLES;The details can be found at here--4.