FLAG_IGNORE_SLICE_ORDER - panic: runtime error: hash of unhashable type map[string]interface {}

[sschulz-t]

Please see the example 5) from this playground: https://go.dev/play/p/M-VZFkXte9T

With FLAG_IGNORE_SLICE_ORDER set, it causes a panic.

It happens at:

func (c *cmp) equals(a, b reflect.Value, level int) {
...
am[a.Index(i).Interface()] += 1
...
}

where the code tries to use the map[string]interface{} as a key when the child is a slice.

When reading the comments in the code:

	// FLAG_IGNORE_SLICE_ORDER causes Equal to ignore slice order so that
	// []int{1, 2} and []int{2, 1} are equal. Only slices of primitive scalars
	// like numbers and strings are supported. Slices of complex types,
	// like []T where T is a struct, are undefined because Equal does not
	// recurse into the slice value when this flag is enabled.

This states it is unsupported to use it with this type of data. I was wondering if it is possible to add this feature in the future.
At least this ticket could save others some time when they do a web search for the cause of the error and did not read the documentation ;)