BUG at Commit "Add *, / and ()"

[poteto0]

error

42
  ^ is not a number

I think judgement at_eof() is missing. But I I'm not sure where to judge, yet.

I tried as below. But it doesn't work.

Node *primary() {
  if (consume('(')) {
    Node *node = expr();
    expect(')');
    return node;
  }

+ if(at_eof()) return NULL;

  return new_node_num(expect_number());
}

[poteto0]

it works!!
But, I'm not sure how this method works.
If at_eof() == True, I guess that this method return nothing.

int expect_number() {
+  if(!at_eof()){
    if (token->kind != TK_NUM)
      error_at(user_input, token->str, "数ではありません");
    int val = token->val;
    token = token->next;
    return val;
+  }
}