How to obtain variadic function arguments past the fixed number of args? about fff HOT 3 OPEN

You can by using a custom fake fuction: For instance:

FAKE_VALUE_FUNC_VARARG(int, fprintf, FILE *, const char*, ...);

In order to access the variadic parameters from your custom fake function, declare a va_list parameter. For instance, a custom fake for fprintf() could call the real fprintf() like this:

int fprintf_custom(FILE *stream, const char *format, va_list ap) {
  if (fprintf0_fake.return_val < 0) // should we fail?
    return fprintf0_fake.return_val;
  return vfprintf(stream, format, ap);
}

from fff.

Yes, I realized that afterwards, but I would prefer the other way since I could validate “after” running the function.

from fff.

You're talking about the call history, right? The problem is the variadic arg types are not known, so there's no way to declare an array to automatically store them. But if you can predict the types you can create you're own history using the custom fake.

from fff.