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Related to #13.
SetFieldcallsElem()before checking its input, so a struct value, nil, or a pointer to a non-struct panics instead of returning an error. This contradicts its documented requirement that unsupported inputs fail, and differs from the error handling used by the other field helpers.Validate that the target is a non-nil pointer to a struct before accessing its fields. Return an error wrapping
ErrUnsupportedTypefor unsupported targets. Existing pointer-to-struct writes keep their behavior.The regression test covers six unsupported target shapes; all six panic before the fix. Full
go test -race -cover ./...passes (97.8% coverage), along withgo vet ./...andstaticcheck ./..., using Go 1.27.1.