_() // ERROR "cannot use .* as value"
x := _+1 // ERROR "cannot use .* as value"
_ = x
- _ = t._ // ERROR "cannot refer to blank field|invalid use of"
+ _ = t._ // ERROR "cannot refer to blank field|invalid use of|t._ undefined"
var v1, v2 T
- _ = v1 == v2 // ERROR "cannot be compared|non-comparable"
+ _ = v1 == v2 // ERROR "cannot be compared|non-comparable|cannot compare v1 == v2"
}