VS Arduino - error: expected nested-name-specifier... with using statement

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error: expected nested-name-specifier... with using statement (Read 3689 times)

TonyZ Junior Member Offline Posts: 13 Joined: Jun 6^th, 2023	error: expected nested-name-specifier... with using statement Feb 29^th, 2024 at 11:45pm	Print Post
	When there are multiple lines of using statements, the code would not compile with the error message: Code usingtest.ino: 14:7: error: expected nested-name-specifier before 'void void setup() { ^~~~ This error could be re-created with the following code: Code (C++) #include <vector> #include <array> using HashData = std::array<uint8_t, 32>; using PublicKey = std::array<uint8_t, 32>; // the setup function runs once when you press reset or power the board void setup() { } // the loop function runs over and over again until power down or reset void loop() { }

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Simon@Visual Micro Administrator Offline Posts: 2767 Joined: Feb 13^th, 2019	Re: error: expected nested-name-specifier... with using statement Reply #1 - Mar 1^st, 2024 at 3:21pm	Print Post
	Thanks for the report, we are investigating this and will update this thread when the fix is available. To work around the issue for now, if you add a variable declaration between the last using statement and the setup() function, it should compile as expected: Code #include <vector> #include <array> using HashData = std::array<uint8_t, 32>; using PublicKey = std::array<uint8_t, 32>; int pointlessVar = 0; // the setup function runs once when you press reset or power the board void setup() { } // the loop function runs over and over again until power down or reset void loop() { }


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Simon@Visual Micro Administrator Offline Posts: 2767 Joined: Feb 13^th, 2019	Re: error: expected nested-name-specifier... with using statement Reply #2 - Mar 13^th, 2024 at 4:43pm	Print Post
	Can you try installing the latest release (24.0313.00) from the top of the board below, this should resolve the issue seen with these prototypes: https://www.visualmicro.com/forums/YaBB.pl?board=VS_ARDUINO_EXT_RELEASES


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TonyZ Junior Member Offline Posts: 13 Joined: Jun 6^th, 2023	Re: error: expected nested-name-specifier... with using statement Reply #3 - May 13^th, 2024 at 12:36am	Print Post
	Good to know. However, this update cannot be found through "Extensions > Manage Extensions > Updates" in Visual Studio.


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Simon@Visual Micro Administrator Offline Posts: 2767 Joined: Feb 13^th, 2019	Re: error: expected nested-name-specifier... with using statement Reply #4 - May 13^th, 2024 at 4:30pm	Print Post
	It is correct the VS2017/2019 version can no longer be found via the Extension Manager in Visual Studio, it can be downloaded from the forum or our downloads page on the website. Let us know if you have any issues installing the new version, and if this resolves the issue.


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TonyZ Junior Member Offline Posts: 13 Joined: Jun 6^th, 2023	Re: error: expected nested-name-specifier... with using statement Reply #5 - May 13^th, 2024 at 4:31pm	Print Post
	But I am using VS2022, so I should be able to see it in the Extension Manager, right?


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Simon@Visual Micro Administrator Offline Posts: 2767 Joined: Feb 13^th, 2019	Re: error: expected nested-name-specifier... with using statement Reply #6 - May 13^th, 2024 at 4:37pm	Print Post
	Apologies, yes it will show in the Extension Manager when the version is updated on the Microsoft Site. In the meantime it can be downloaded form the forum board below and manually installed: https://www.visualmicro.com/forums/YaBB.pl?board=VS_ARDUINO_EXT_RELEASES


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TonyZ Junior Member Offline Posts: 13 Joined: Jun 6^th, 2023	Re: error: expected nested-name-specifier... with using statement Reply #7 - May 13^th, 2024 at 4:38pm	Print Post
	Thanks. How long would the delay be between the release on the website and the release through Extension Manager?


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Simon@Visual Micro Administrator Offline Posts: 2767 Joined: Feb 13^th, 2019	Re: error: expected nested-name-specifier... with using statement Reply #8 - May 13^th, 2024 at 4:59pm	Print Post
	There is no specific timescale between it being available in the forum as a beta, and being finally released to Microsoft. We will be releasing the latest version shortly to the Microsoft Gallery, so it will show in extension manager. The file downloaded from our website/forum is exactly the same package, and does not affect future updates or anything else differently to the one from the Microsoft Gallery.


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TonyZ Junior Member Offline Posts: 13 Joined: Jun 6^th, 2023	Re: error: expected nested-name-specifier... with using statement Reply #9 - May 13^th, 2024 at 5:00pm	Print Post
	Good to know. Thanks.


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Simon@Visual Micro Administrator Offline Posts: 2767 Joined: Feb 13^th, 2019	Re: error: expected nested-name-specifier... with using statement Reply #10 - May 14^th, 2024 at 7:41am	Print Post
	The release is now available through Extension Manager in Visual Studio (24.0510.00) as well as on the forum.


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