364         size_t start_buf = buf->content - buf->contentIO;  in xmlBufEmpty()  local
366 	buf->size += start_buf;  in xmlBufEmpty()
409 	    size_t start_buf = buf->content - buf->contentIO;  in xmlBufShrink()  local
410 	    if (start_buf >= buf->size) {  in xmlBufShrink()
414 		buf->size += start_buf;  in xmlBufShrink()
476         size_t start_buf = buf->content - buf->contentIO;  in xmlBufGrowInternal()  local
478 	newbuf = (xmlChar *) xmlRealloc(buf->contentIO, start_buf + size);  in xmlBufGrowInternal()
484 	buf->content = newbuf + start_buf;  in xmlBufGrowInternal()
749     size_t start_buf;  in xmlBufResize()  local
808         start_buf = buf->content - buf->contentIO;  in xmlBufResize()
810         if (start_buf > newSize) {  in xmlBufResize()
815 	    buf->size += start_buf;  in xmlBufResize()
817 	    rebuf = (xmlChar *) xmlRealloc(buf->contentIO, start_buf + newSize);  in xmlBufResize()
823 	    buf->content = rebuf + start_buf;  in xmlBufResize()
957         size_t start_buf = buf->content - buf->contentIO;  in xmlBufAddHead()  local
959 	if (start_buf > (unsigned int) len) {  in xmlBufAddHead()