MSVC: preprocessing is failed while compiling is success

[AJIOB]

Minimal reproducible example:

#pragma warning(disable : 4002)

// C4002b.cpp
// compile with: /W1 /WX
#define F(x, y)

int main()
{
    F(2, , , , , , 3, , , , , , ) // C4002
    // Try the following line instead:
    // F(2,3)

    return 0;
}

Tested with MSVC 2017, 2022.

The problem is that sccache without direct mode doesn't remove /WX flag when adding /EP one.

[AJIOB]

Just a note: our big project disables some different warnings in per-file or per-region manner because of the different reasons.

And this code compiles & works, similar to the #1725.

So, I suggest to just disable /WX flag (interpret warnings as errors) for removing incorrect cache tool errors