Mocking objects with variadic functions arguments cause a EXC_BAD_ACCESS

[xtreme-josh-wilks]

We're trying to perform a partial mock on an object who has a variadic argument list

ie.

- (BOOL)format:(NSString*)format, ... {
  return YES;
}

When OCMock tries to forward invocation to this method it causes a EXC_BAD_ACCESS when trying to access the variadic arguments (ie. calling va_arg())

[erikdoe]

Unfortunately this does not work yet. Will keep this issue open as an enhancement request.