exp3
Char *p1 = exp3(vp, ignore);
p2 = exp3(vp, ignore);
p2 = exp3(vp, ignore);
static Char * exp3(Char ***, bool);
expected3(exp1, exp2, exp3)
tok_kind exp1, exp2, exp3;
toktostr(exp1), toktostr(exp2), toktostr(exp3));