file := "??"
		if fileIndex >= 0 {
			file = ctxt.PosTable.FileTable()[fileIndex]
		}
		got := fmt.Sprintf("%s:%d", file, line)

		if got != test.want {
			t.Errorf("ctxt.getFileSymbolAndLine(%v) = %q, want %q", test.pos, got, test.want)
		}
	}