// A Value with "unsafe" strings is significantly faster:
// safe:  1785 ns/op, 0 allocs
// unsafe: 690 ns/op, 0 allocs

// Run this with and without -tags unsafe_kvs to compare.
func BenchmarkUnsafeStrings(b *testing.B) {
	b.ReportAllocs()
	dst := make([]Value, 100)
	src := make([]Value, len(dst))
	b.Logf("Value size = %d", unsafe.Sizeof(Value{}))
	for i := range src {