errorSquiggles 'user-defined literal operator not found' for macro

[startup73]

Operating Sytem:Win7 X86_64 VS Code: V1.17.0-insider C/C++ extension version: 0.13.0

only if

• macro has parameters
• call the macro with "%s"
• the macro defined with do while
• the do{ in the same line with define

a.h

#define LOG_ERROR(format, argv...) do {    \
                printf("[%s|%d]"format, __FILE__, __LINE__, ##argv); \
} while (0)

a.cpp

#include "a.h"
...
LOG_ERROR("%s", "abc");
...

[bobbrow]

Thanks for reporting this. I also saw it last week while getting a demo ready for CppCon, but forgot to log an issue for it. I was able to work around the issue by adding whitespace between the quoted text and the argument (e.g. "format" in your case)

[katjie]

I have noticed this as well, still now. When I use catch2 (c++ testing framework), all of my REQUIRE macros will be underlined with this "error".

[sean-mcmanus]

The bug repros with Visual Studio as well. I've reported bug https://developercommunity.visualstudio.com/content/problem/377739/c-intellisense-reports-invalid-user-defined-litera.html .

As a workaround, you could use "[%s|%d]"##format or "[%s|%d]" format as Bob suggested.

You also need a comma before the "...".

[pedzed]

When I use catch2 (c++ testing framework), all of my REQUIRE macros will be underlined with this "error".

I am using Catch2 as well and it is driving me crazy. What have you done in the mean time? Disable error squiggles altogether?

[katjie]

Hi @pedzed
I reported issue #2786 which relates a little bit more to my specific case with Catch2. Maybe you can try some of the suggestions made in there, however I found them unsuccessful. However, for unrelated reasons, we have since decided to use GoogleTest instead. GoogleTest did not have this problem.

[colinaaa]

I'm using Catch2, and I'm getting the same problem!

[shehabattia96]

Upvote, it's driving me insane too. Using Catch2!

[sean-mcmanus]

@shehabattia96 Upvotes to this issue may not be "counted", because the issue is being tracked by https://developercommunity.visualstudio.com/content/problem/377739/c-intellisense-reports-invalid-user-defined-litera.html , but that requies a Microsoft account to upvote.

I've filed a request to enable GitHub users to upvote VS issues without a Microsoft account at https://developercommunity.visualstudio.com/idea/869998/enable-vs-code-users-with-github-accounts-to-upvot.html

UPDATE: Upvotes to this GitHub issue are sufficient now.

[shehabattia96]

@sean-mcmanus Thanks for creating a ticket and for letting me know! HNY!

[sean-mcmanus]

A potential workaround is to use

#if __INTELLISENSE__
#pragma diag_suppress 2486
#endif

[boid-com]

Great solution, is this documented anywhere?

[sean-mcmanus]

I don't know. Might not be. I'm not sure where a good place would be to document that though.

[boid-com]

On this page: https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools