std.cfg: Added support for more functions from <sstream> (#5995)

Author: orbitcowboy

cfg/std.cfg

@@ -6509,28 +6509,28 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <noreturn>false</noreturn>
   </function>
   <!-- bool good() const; -->
-  <function name="std::ios::good,std::ios_base::good,std::ostream::good,std::ofstream::good,std::ostringstream::good,std::ifstream::good">
+  <function name="std::ios::good,std::ios_base::good,std::ostream::good,std::ofstream::good,std::ostringstream::good,std::ifstream::good,std::istringstream::good,std::wistringstream::good,std::basic_istringstream::good">
     <use-retval/>
     <const/>
     <returnValue type="bool"/>
     <noreturn>false</noreturn>
   </function>
   <!-- bool eof() const; -->
-  <function name="std::ios::eof,std::ios_base::eof,std::ostream::eof,std::ofstream::eof,std::ostringstream::eof">
+  <function name="std::ios::eof,std::ios_base::eof,std::ostream::eof,std::ofstream::eof,std::ostringstream::eof,std::istringstream::eof,std::wistringstream::eof,std::basic_istringstream::eof">
     <use-retval/>
     <const/>
     <returnValue type="bool"/>
     <noreturn>false</noreturn>
   </function>
   <!-- bool fail() const; -->
-  <function name="std::ios::fail,std::ios_base::fail,std::ostream::fail,std::ofstream::fail,std::ostringstream::fail,std::ifstream::fail">
+  <function name="std::ios::fail,std::ios_base::fail,std::ostream::fail,std::ofstream::fail,std::ostringstream::fail,std::ifstream::fail,std::istringstream::fail,std::wistringstream::fail,std::basic_istringstream::fail">
     <use-retval/>
     <const/>
     <returnValue type="bool"/>
     <noreturn>false</noreturn>
   </function>
   <!-- bool bad() const; -->
-  <function name="std::ios::bad,std::ios_base::bad,std::ostream::bad,std::ofstream::bad,std::ostringstream::bad,std::ifstream::bad">
+  <function name="std::ios::bad,std::ios_base::bad,std::ostream::bad,std::ofstream::bad,std::ostringstream::bad,std::ifstream::bad,std::istringstream::bad,std::wistringstream::bad,std::basic_istringstream::bad">
     <use-retval/>
     <const/>
     <returnValue type="bool"/>