ret = min(len, bio->wbuf.s - bio->wbuf.d);
memcpy(bio->wbuf.b + bio->wbuf.d, data, ret);
bio->wbuf.d += ret;
- if((bioflushsome(bio) < 0) && (ret == 0))
- return(-1);
+ if(bioflushsome(bio) < 0) {
+ if(ret == 0)
+ return(-1);
+ if(ret < bio->wbuf.d - bio->wh) { /* Should never be false */
+ bio->wbuf.d -= ret;
+ return(-1);
+ }
+ }
return(ret);
}