CA2022 is incompatible with .NET Framework 4.8

[N-Olbert]

Analyzer

Diagnostic ID: CA2022: Avoid inexact read with Stream.Read

Analyzer source

NuGet Package: Microsoft.CodeAnalysis.NetAnalyzers

Version: 9.0.0

Describe the bug

This rule raises an issue within .NET Framework 4.8, but the suggested method ReadExactly does not exist

Steps To Reproduce

1. Create new .NET Framework 4.8 console app.
2. Insert the following method anywhere:

        void M1(Stream stream, byte[] buffer)
        {
            // CA2022 violation.
            stream.Read(buffer, 0, buffer.Length);
        }

Expected behavior

No warning at all

Actual behavior

CA2022 violation reported

Additional context

#7208
#69159

[mpidash]

You are correct that the suggested method ReadExactly does not exist in .NET Framework 4.8. But the doc page suggests another way to fix the violation:

To fix a violation, either check the return value (which is the total number of bytes read into the buffer) ...

When you check the return value (which is the recommended approach and the reason this rule exists, see here) the violation is no longer reported.