ExceptionHandlerTest

main.cpp

#include <windows.h>
#include <stdio.h>

static LPTOP_LEVEL_EXCEPTION_FILTER OldFilter;
static char callOrder[10] = "";

int main()
{
    OldFilter = SetUnhandledExceptionFilter([](PEXCEPTION_POINTERS ExceptionInfo) -> LONG
    {
        strcat_s(callOrder, "UEF ");
        return EXCEPTION_CONTINUE_SEARCH;
    });
    AddVectoredExceptionHandler(0, [](PEXCEPTION_POINTERS ExceptionInfo) -> LONG
    {
        strcat_s(callOrder, "VEH ");
        if (OldFilter)
            return OldFilter(ExceptionInfo);
        return EXCEPTION_CONTINUE_SEARCH;
    });
    __debugbreak(); //crash the program
    puts(callOrder); //"VEH UEF " <- no matter the order of registration
}

Small program to check if Vectored Exception Handlers are called before Unhandled Exception Filters.