-------- @pointsto val-p --------
[
	{
		"type": "*int",
		"labels": [
			{
				"pos": "testdata/src/pointsto-json/main.go:8:6",
				"desc": "s.x[*]"
			}
		]
	}
]
-------- @pointsto val-i --------
[
	{
		"type": "*D",
		"namepos": "testdata/src/pointsto-json/main.go:24:6",
		"labels": [
			{
				"pos": "testdata/src/pointsto-json/main.go:14:10",
				"desc": "new"
			}
		]
	},
	{
		"type": "C",
		"namepos": "testdata/src/pointsto-json/main.go:23:6"
	}
]