mbrlen
size_t n = mbrlen(p, (size_t)(e - p), &st);
return mbrlen(p, l, v);
size_t mbrlen(const char * __restrict, size_t, mbstate_t * __restrict);
_RESTART_BEGIN(mbrlen, _TO_CEI(cl), pspriv, psenc);
_RESTART_END(mbrlen, _TO_CEI(cl), pspriv, psenc);
charlen = mbrlen(buf, len, &lenstate);
if ((clen = mbrlen(lbuf, lbuflen, &mbs)) < 0) {
oclen = mbrlen(op, MB_LEN_MAX, &mbs1);
nclen = mbrlen(np, MB_LEN_MAX, &mbs2);