由于@Volker并未发布他的评论作为答案，因此我会为了完整性而这样做。 所以我已经走在正确的道路上，但是在初始化它时却无法取消引用我的结构的指针接收器：
// Implements the Unmarshaler interface of the yaml pkg.
func (e *EpnSeq) UnmarshalYAML(unmarshal func(interface{}) error) error {
yamlEpnSequence := make([]uint16, 0)
err := unmarshal(&yamlEpnSequence)
if err != nil {
return err
}
// make sure to dereference before assignment,
// otherwise only the local variable will be overwritten
// and not the value the pointer actually points to
*e = make(EpnSeq, len(yamlEpnSequence))
for priority, epn := range yamlEpnSequence {
e[epn] = uint16(priority) // no crash anymore
}
return nil
}
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