func crypto/sha1.appendUint64 2 uses crypto/sha1 (current package) sha1.go#L60: b = appendUint64(b, d.len) sha1.go#L83: func appendUint64(b []byte, x uint64) []byte {
The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)