<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=gb2312" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 8.00.7600.16625"></HEAD> <BODY> <DIV> sorror, I made a mistake! <HR> </DIV>发件人：<A title=okenjian@163.com href="mailto:okenjian@163.com">oken</A> 发送日期：2010-09-30 14:57 收件人：<A title=cairo@cairographics.org href="mailto:cairo@cairographics.org">cairo@cairographics.org</A> 抄送： 主题：[cairo] Is it an error in cairo-surface.c <META name=GENERATOR content="MSHTML 8.00.7600.16625"> VERISON:cairo 1.11.1 cairo_status_t _cairo_surface_fill_rectangles (cairo_surface_t  *surface,     cairo_operator_t         op,     const cairo_color_t *color,     cairo_rectangle_int_t *rects,     int    num_rects) {     cairo_int_status_t status;     if (surface->status)  return surface->status;     assert (! surface->is_snapshot);     if (surface->finished)  return _cairo_surface_set_error (surface,CAIRO_STATUS_SURFACE_FINISHED);     if (num_rects == 0)  return CAIRO_STATUS_SUCCESS;     if (surface->backend->fill_rectangles) {  status = surface->backend->fill_rectangles (surface, op, color,           rects, num_rects);  if (status != CAIRO_INT_STATUS_UNSUPPORTED)      return _cairo_surface_set_error (surface, status);     }     return _cairo_surface_set_error (surface,      _cairo_surface_fallback_fill_rectangles (surface, op, color,            rects, num_rects)); } In my opinion,  if (status != CAIRO_INT_STATUS_UNSUPPORTED)      return _cairo_surface_set_error (surface, status); should be   if (status && status != CAIRO_INT_STATUS_UNSUPPORTED)      return _cairo_surface_set_error (surface, status); </BODY></HTML>