Symbol: CHIN
usr/src/lib/libc/port/regex/engine.c
636
if (wc == BADCHAR || !CHIN(NC_ENGINE, cs, wc))
usr/src/lib/libc/port/regex/engine.c
954
if (!NONCHAR(ch) && CHIN(NC_ENGINE, cs, ch))
usr/src/lib/libc/port/regex/regcomp.c
1315
if (CHIN(p->nc, cs, i)) {