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Do not inhibit the dead code elimination. #341

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10 changes: 8 additions & 2 deletions cmp/path.go
Original file line number Diff line number Diff line change
Expand Up @@ -168,7 +168,9 @@ func (ps pathStep) String() string {
if ps.typ == nil {
return "<nil>"
}
s := value.TypeString(ps.typ, false)
// NOTE: do not use value.TypeString(qualified = false) to avoid
// calls to reflect.Type.Method() which disables the DCE.
s := ps.typ.String()
if s == "" || strings.ContainsAny(s, "{}\n") {
return "root" // Type too simple or complex to print
}
Expand Down Expand Up @@ -293,7 +295,11 @@ type typeAssertion struct {

func (ta TypeAssertion) Type() reflect.Type { return ta.typ }
func (ta TypeAssertion) Values() (vx, vy reflect.Value) { return ta.vx, ta.vy }
func (ta TypeAssertion) String() string { return fmt.Sprintf(".(%v)", value.TypeString(ta.typ, false)) }
func (ta TypeAssertion) String() string {
// NOTE: do not use value.TypeString(qualified = false) to avoid
// calls to reflect.Type.Method() which disables the DCE.
return fmt.Sprintf(".(%v)", ta.typ.String())
}

// Transform is a [PathStep] that represents a transformation
// from the parent type to the current type.
Expand Down