void foooo(const std::vector<int>& v)
{
    struct s {
        int n;
    };

    static const s arr[] = { //Без static - справедливо ругается, иначе падает компилятор
        {0}
    };

    std::for_each(v.begin(), v.end(), [](int val)
        {
            std::find_if(arr, arr+sizeof(arr)/sizeof(s), []() -> bool
                {
                    return true;
                }
            );
        }
    );            
}

std::for_each(v.begin(), v.end(), [](int val)
    {
        unsigned int sz = sizeof(arr)/sizeof(s);
    }
);

Microsoft (R) C/C++ Optimizing Compiler Version 16.00.40219.01 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

x.cpp
x.cpp(18) : error C2065: 's' : undeclared identifier
x.cpp(18) : error C2070: ''unknown-type'': illegal sizeof operand
[Finished in 1.0s with exit code 2]

G:\bug_test>cl cl_test.cpp
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86
Copyright (C) Microsoft Corporation. All rights reserved.

cl_test.cpp
cl_test.cpp(17) : fatal error C1001: An internal error has occurred in the compiler.
(compiler file 'msc1.cpp', line 1420)
To work around this problem, try simplifying or changing the program near the locations listed above.
Please choose the Technical Support command on the Visual C++
Help menu, or open the Technical Support help file for more information
Internal Compiler Error in C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\cl.exe. You will be prompted to s
end an error report to Microsoft later.

G:\bug_test>cl cl_test.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 16.00.40219.01 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

cl_test.cpp
cl_test.cpp(17) : fatal error C1001: An internal error has occurred in the compiler.
(compiler file 'msc1.cpp', line 1420)
To work around this problem, try simplifying or changing the program near the locations listed above.
Please choose the Technical Support command on the Visual C++
Help menu, or open the Technical Support help file for more information
Internal Compiler Error in C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\x86_amd64\cl.exe. You will be pro
mpted to send an error report to Microsoft later.

#include <vector>
#include <algorithm>

void foooo(const std::vector<int>& v)
{
    struct s {
        int n;
    };

    static const s arr[] = { //Без static - справедливо ругается, иначе падает компилятор
        {0}
    };

    std::for_each(v.begin(), v.end(), [](int val)
        {
            int n = sizeof(arr)/sizeof(s);
        }
    );            
}

G:\test_task_1\bug_test>cl cl_test.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 17.00.61030 for x86
Copyright (C) Microsoft Corporation. All rights reserved.

cl_test.cpp
Microsoft (R) Incremental Linker Version 11.00.61030.0
Copyright (C) Microsoft Corporation. All rights reserved.

/out:cl_test.exe
cl_test.obj
LINK : fatal error LNK1561: entry point must be defined

call "c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" amd64
rem PATH=c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN|amd64;......
cl cl_test.cpp