test: (.
The code in the test function is in the standard lib. The standard library uses a couple of macros to help it differentiate between different functions. When it sees a function that is not declared in the standard, it tries to find another definition that it knows about. If it cannot find any, it just gives up. In this case that means it tries to find a definition where the name of the function is the same as the name of the function in the standard library.
In the case of _start, the first thing that test sees is the one declaration of the function. That declaration declares the function with the name _start, so it can’t find another definition. But since it already has another definition, it just tries to use the first definition and see if it works.
This was the first error I got on my own computer. I had to go and look for the function name I was looking for on the standard library. I was not able to find it, however, because it seems that many functions are named the same, even if they have different implementations. This is one of a few places where you might find yourself scratching your head as to whether a function is really the same as another one.
The correct answer is that you have to take your function definition and convert it to something compatible with the compiler’s implementation. For instance, you might want to use the function in C++ as if it were a C function. You would want to call main() first, then pass your function as a parameter.
Don’t forget to turn off this bit of code, which is why we recommend doing it manually.
I don’t know why this happened, but the function at the heart of my test got removed. The function is called _start, and it’s supposed to be called within main before calling the main program’s exit, which in turn calls _stop. If you call it in main, you would call it in main as well. If you replace _start with some other function, you would replace the code that is called by this one with that code, which is why it got removed.
It’s not clear if this function is actually called to start or if it’s called to stop execution. It’s unclear if the function is supposed to return a value that indicates whether the main program has finished its task, or if it’s supposed to return some kind of flag that allows the main program to know when it has finished. I suspect it’s used to determine whether it’s time to start another task.
