[cfe-dev] Odd clang result using stringstream formatted input

[Edward Diener via cfe-dev]

The following program:

#include <iostream>
#include <sstream>
#include <stdexcept>
int main()
     {
	
     std::stringstream ss;
     ss.exceptions(std::ios_base::failbit | std::ios_base::badbit);
     char c;

     try
         {
         ss >> c;
         std::cout << "Exception not thrown.";
         }
     catch (std::runtime_error &)
         {
         std::cout << "Exception std::runtime_error thrown.";
         }
     catch (...)
         {
         std::cout << "Unknown exception thrown.";
         }
     }

outputs "Unknown exception thrown." when compiled and linked with the 
latest clang built from source on Windows 7. The compilation options are:

-c -x c++ -Wno-unused-local-typedef -Wno-dll-attribute-on-redeclaration 
-O0 -g -fno-inline -Wall -g -march=i686 -m32 -o

The linker options are:

-Wl,-Bstatic  -Wl,-Bdynamic  -Wl,--end-group -g -march=i686 -m32

I would have expected the output to be "Exception std::runtime_error 
thrown." as it is when compiled with VC++ 14.

Is clang following the C++ standard or is this a bug in clang ?