C++ code parsing does not understand MS suffix ui64

The C++ parser does not like this code, underlining the lines containing the macro value (and usually the one below) with "expected a declaration", "expected token ';', got 'foo'", "unexpected token '<error>'":

#include <climits>

typedef unsigned long long Foo;
#define FOO ULLONG_MAX
Foo foo = FOO;

if (foo)