gdSinkPtr         631 ext/gd/libgd/gd.h void gdImagePngToSink(gdImagePtr im, gdSinkPtr out);
gdSinkPtr         754 ext/gd/libgd/gd.h gdIOCtx* gdNewSSCtx(gdSourcePtr in, gdSinkPtr out);
gdSinkPtr          36 ext/gd/libgd/gd_io_ss.c 	gdSinkPtr snk;