BEGIN {
       ##ERROR: unexpected end of input
---

function abc(x { ##ERROR: comma expected in place of '{'
}

---

function abc (x, ...,) { ##ERROR:  right parenthesis expected in place of ','
}

---

function abc (x, ..., a) { ##ERROR:  right parenthesis expected in place of ','
}

---

function abc (... ...) { ##ERROR:  right parenthesis expected in place of '...'
}

---

BEGIN {
	@argv = 10 ##ERROR: invalid assignment statement
}

---

BEGIN {
	@argc = 10 ##ERROR: invalid assignment statement
}

---

BEGIN {
	@nil = 10 ##ERROR: invalid assignment statement
}