Crash error: can't allocate region

[onmyway133]

Hi @tonyarnold , I'm playing with different diffing algorithms, and want to give them some benchmarks https://github.com/onmyway133/DeepDiff#among-different-frameworks. When comparing Differ on some data sets, I get a crash. I run on device iPhone 6, iOS 11, Xcode 9.2. Maybe the datset is wrong, but it runs fine with many other diffing framworks

Benchmark(1924,0x1b545bb80) malloc: *** mach_vm_map(size=1073741824) failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug

Here is how such a data set gets generated

private func generate() -> (old: Array<String>, new: Array<String>) {
    let old = Array(repeating: UUID().uuidString, count: 10000)
    var new = old

    new.removeSubrange(100..<200)
    new.insert(
      contentsOf: Array(repeating: UUID().uuidString, count: 500),
      at: new.endIndex.advanced(by: -20)
    )

    return (old: old, new: new)
  }