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fix: return error instead of panicking when MapTo receives a nil pointer #379

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fix: return error instead of panicking when MapTo receives a nil pointer #379

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9 changes: 9 additions & 0 deletions struct.go
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Original file line number Diff line number Diff line change
Expand Up @@ -388,6 +388,15 @@ func (s *Section) mapTo(v interface{}, isStrict bool) error {
return errors.New("not a pointer to a struct")
}

// Handle pointer-to-pointer: dereference again and check for nil
for val.Kind() == reflect.Ptr {
if val.IsNil() {
return errors.New("cannot map to a nil pointer")
}
typ = typ.Elem()
val = val.Elem()
}

if typ.Kind() == reflect.Slice {
newField, err := s.mapToSlice(s.name, val, isStrict)
if err != nil {
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