SerialStream doesn't override memory-based Read-/WriteAsync methods

[ViktorHofer]

When adding a NetCoreAppCurrent configuration to System.IO.Ports, roslyn warns that SerialStream's memory-based ReadAsync and WriteAsync methods aren't overridden. I was unsure if this requires api-approval so I'm filing this issue.

/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System/IO/Ports/SerialStream.cs(13,35): error CA1844: 'SerialStream' overrides array-based 'ReadAsync' but does not override memory-based 'ReadAsync'. Consider overriding memory-based 'ReadAsync' to improve performance. [/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System.IO.Ports.csproj]
/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System/IO/Ports/SerialStream.cs(13,35): error CA1844: 'SerialStream' overrides array-based 'WriteAsync' but does not override memory-based 'WriteAsync'. Consider overriding memory-based 'WriteAsync' to improve performance. [/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System.IO.Ports.csproj]

cc @adamsitnik @carlossanlop @jozkee @jeffhandley

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Issue Details

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When adding a NetCoreAppCurrent configuration to System.IO.Ports, roslyn warns that SerialStream's memory-based ReadAsync and WriteAsync methods aren't overridden. I was unsure if this requires api-approval so I'm filing this issue.

/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System/IO/Ports/SerialStream.cs(13,35): error CA1844: 'SerialStream' overrides array-based 'ReadAsync' but does not override memory-based 'ReadAsync'. Consider overriding memory-based 'ReadAsync' to improve performance. [/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System.IO.Ports.csproj]
/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System/IO/Ports/SerialStream.cs(13,35): error CA1844: 'SerialStream' overrides array-based 'WriteAsync' but does not override memory-based 'WriteAsync'. Consider overriding memory-based 'WriteAsync' to improve performance. [/home/vihofer/runtime/src/libraries/System.IO.Ports/src/System.IO.Ports.csproj]

cc @adamsitnik @carlossanlop @jozkee @jeffhandley

Author:	ViktorHofer
Assignees:	-
Labels:	area-System.IO
Milestone:	-

[stephentoub]

I was unsure if this requires api-approval so I'm filing this issue.

No approval required.

[adamsitnik]

@ViktorHofer do you intend to work on it? If not, could please mark it as up-for-grabs and remove your assignment?