Symbol_new
Symbol_new("$");
lem.errsym = Symbol_new("error");
Symbol_new("{default}");
psp->lhs = Symbol_new(x);
psp->prevrule->precsym = Symbol_new(x);
psp->rhs[psp->nrhs] = Symbol_new(x);
struct symbol *sp = Symbol_new(x);
struct symbol *sp = Symbol_new(x);
sp = Symbol_new(x);
struct symbol *sp = Symbol_new(x);
struct symbol *Symbol_new();
ap->sp = Symbol_new("{default}");