Single bit flip in system header.

log.txt

make[1]: Entering directory `/home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.obj/lib/Support'
llvm[1]: Compiling APFloat.cpp for Release+Asserts build
llvm[1]: Compiling APInt.cpp for Release+Asserts build
In file included from /usr/include/c++/4.8/ios:42:0,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iterator:64,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/include/llvm/ADT/SmallVector.h:28,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/include/llvm/ADT/ArrayRef.h:14,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/include/llvm/ADT/APInt.h:19,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/include/llvm/ADT/APFloat.h:20,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/lib/Support/APFloat.cpp:15:
/usr/include/c++/4.8/bits/ios_base.h:226:7: error: ‘wtring’ does not name a type
       wtring _M_msg;
       ^
In file included from /usr/include/c++/4.8/ios:42:0,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iterator:64,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/include/llvm/ADT/SmallVector.h:28,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/include/llvm/ADT/ArrayRef.h:14,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/include/llvm/ADT/APInt.h:19,
                 from /home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.src/lib/Support/APInt.cpp:15:
/usr/include/c++/4.8/bits/ios_base.h:226:7: error: ‘wtring’ does not name a type
       wtring _M_msg;
       ^
/bin/rm: cannot remove ‘/home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.obj/lib/Support/Release+Asserts/APInt.d.tmp’: No such file or directory
make[1]: *** [/home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.obj/lib/Support/Release+Asserts/APInt.o] Error 1
make[1]: *** Waiting for unfinished jobs....
/bin/rm: cannot remove ‘/home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.obj/lib/Support/Release+Asserts/APFloat.d.tmp’: No such file or directory
make[1]: *** [/home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.obj/lib/Support/Release+Asserts/APFloat.o] Error 1
make[1]: Leaving directory `/home/buildslave/slave_as-bldslv2/clang-native-arm-cortex-a9/llvm.obj/lib/Support'
make: *** [all] Error 1