GZipStream compression of zero length byte[] in .NET 8.0 results in stream length 20 while in .NET 10.0 it results in length 0 #122928
Description
Description
GZipStream compression of zero length byte[] in .NET 8.0 results in length 20 while in .NET 10.0 it results in length 0
var zeroByteArray = Array.Empty();
.NET 8.0 stream.Length is 20
.NET 10.0 stream.Length is 0
Reproduction Steps
using System;
using System.IO;
using System.IO.Compression;
var zeroByteArray = Array.Empty();
using var stream = new MemoryStream();
using (var zipStream = new GZipStream(stream, CompressionMode.Compress, true))
{
zipStream.Write(zeroByteArray, 0, zeroByteArray.Length);
}
Console.WriteLine(stream.Length);
Expected behavior
stream.Length should not change between frameworks 8 and 10
Actual behavior
stream.Length changes between frameworks 8 and 10
Regression?
Yes
Known Workarounds
No response
Configuration
No response
Other information
fiddle link - https://dotnetfiddle.net/lCithR