Steps to reproduce:

1. include any std header
2. notice the errors

The problem happens in MSVS's vadefs.h:151 :

template <typename _Ty>
struct __vcrt_assert_va_start_is_not_reference

{ static_assert(!__vcrt_va_list_is_reference<_Ty>::__the_value, "va_start argument must not have reference type and must not be parenthesized"); }

;

the static_assert causes a "Parse issue: error: expected parameter declarator" and after this almost nothing in the code model works - which is to be expected because this is a fundamental header of MS' standard library