[LLVMbugs] [Bug 13530] New: clang++ --std=gnu++11 fails to compile <iostream>

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=13530

             Bug #: 13530
           Summary: clang++ --std=gnu++11 fails to compile <iostream>
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: lbalbalba at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


clang fails compiling a hello world program when using the --std=gnu+11 option: 


# cat test.cpp
#include <iostream>

int main() {
    std::cout << "Hello, world!" << std::endl;
}



# clang++ test.cpp -o test -std=gnu++11


In file included from test.cpp:1:
In file included from
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/iostream:39:
In file included from
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/ostream:39:
In file included from
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/ios:40:
In file included from
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/bits/char_traits.h:40:
In file included from
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/bits/stl_algobase.h:65:
In file included from
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/bits/stl_pair.h:61:
In file included from
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/bits/move.h:57:
/usr/lib/gcc/i686-redhat-linux/4.7.0/../../../../include/c++/4.7.0/type_traits:256:39:
error: use of undeclared identifier '__float128'
    struct __is_floating_point_helper<__float128>
                                      ^
1 error generated.

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