TestSliceIdentical Fails When Debugger is Attached

[RiversJin]

In the TestSliceIdentical test case, a and b are two different int slices with cap=0, len=0. However, the compiler or debugger might optimize this behavior, resulting in them having the same underlying memory. As mentioned, if a debugger is used, then this case will fail; similarly, simply adding fmt.Printf("%p %p\n", a, b) afterwards will also cause a failure. Therefore, I suggest modifying the implementation of sliceIdentical and its tests. Two slices of the same type with cap=0 should be considered equivalent slices (because appending to them will change the underlying memory, and the underlying memory of a cap=0 slice is meaningless).

This issue can be reproduced with Go version go1.22.2 darwin/amd64.