Hi,
Frequently when opening a cmake project in visual studio there’s a bug where intellisense cannot recognize some of the C++ standard libraries. I have found a workaround, if I intentionally break my CMakePresets.json file and then unbreak it and save it, the problem goes away.
This isn’t a very good practice though, so I’d like to find a proper solution. Here’s a look at my simple CMakePresets.json file:
{
"version": 3,
"configurePresets": [
{
"binaryDir": "build",
"generator": "Visual Studio 17 2022",
"name": "default"
}
],
"buildPresets": [
{
"name": "default",
"configurePreset": "default"
}
]
}
AFAIK the issue stems from there being some sort of difference between the compiler used in your cmake project, and the one used by intellisense to check your code. I believe there is a way to add a vendor field to your CMakePresets.json file and force intellisense to behave in a certain way that prevents this, but I don’t know how to do that (if that’s even the correct solution). I’m writing C++ and using C++ 20 standard. I might also add I’m using VS 2022.
I hope that makes sense, I’m still quite new to this and sometimes it feels very overwhelming 
Any insight at all into this would be most appreciated, thank you.