Function releaseobuf

src/objnam.c:149–160

put the most recently allocated buffer back if possible */

/* put the most recently allocated buffer back if possible */
staticfn void
releaseobuf(char *bufp)
{
    /* caller may not know whether bufp is the most recently allocated
       buffer; if it isn't, do nothing; note that because of the somewhat
       obscure PREFIX handling for object name formatting by xname(),
       the pointer our caller has and is passing to us might be into the
       middle of an obuf rather than the address returned by nextobuf() */
    if (bufp >= obufs[obufidx]
        && bufp < obufs[obufidx] + sizeof obufs[obufidx]) /* obufs[][BUFSZ] */
        obufidx = (obufidx - 1 + NUMOBUF) % NUMOBUF;
}

/* used by display_pickinv (invent.c, main whole-inventory routine) to
   release each successive doname() result in order to try to avoid