comparison DEPENDENCIES/generic/include/boost/spirit/home/qi/numeric/real_policies.hpp @ 101:c530137014c0

Update Boost headers (1.58.0)

                 return false;   // not "nan"
 
             // nan[(...)] ?
             if (detail::string_parse("nan", "NAN", first, last, unused))
             {
-                if (*first == '(')
+                if (first != last && *first == '(')
                 {
                     // skip trailing (...) part
                     Iterator i = first;
 
                     while (++i != last && *i != ')')