Reading columns asynchronously with JsonNet plugin might throw ArgumentOutOfRangeException #6108

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Reading columns asynchronously with JsonNet plugin might throw ArgumentOutOfRangeException#6108

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#6109

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9.0.4

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vonzshik

opened on May 6, 2025

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That's because we pass the length of MemoryStream while copying from the buffer, which is 0.

npgsql/src/Npgsql.Json.NET/Internal/JsonNetJsonConverter.cs

Lines 52 to 54 in 7320260

	var mem = new MemoryStream();
	if (async)
	await stream.CopyToAsync(mem, Math.Min((int)mem.Length, 81920), cancellationToken).ConfigureAwait(false);

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