This happens when testing the next version of llvm: https://bugs.chromium.org/p/chromium/issues/detail?id=800984

For chell (amd64), app-benchmarks/glmark2 build fails with new errors.

The new errors are from [-Wreserved-user-defined-literal] and [-Wdeprecated-declarations].

Here's an example of [-Wreserved-user-defined-literal]:
../src/options.cpp:127:48: error: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wreserved-user-defined-literal]
           "                         Default: "GLMARK_DATA_PATH"\n"
                                               ^

And here's an example of [-Wdeprecated-declarations]:
../src/image-reader.cpp:123:16: error: 'auto_ptr<std::basic_istream<char> >' is deprecated [-Werror,-Wdeprecated-declarations]
    const std::auto_ptr<std::istream> is_ptr(Util::get_resource(filename));
               ^
/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4/backward/auto_ptr.h:281:7: note: 'auto_ptr<std::basic_istream<char> >' has been explicitly marked deprecated here
    } _GLIBCXX_DEPRECATED;
      ^
/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4/x86_64-pc-linux-gnu/bits/c++config.h:82:46: note: expanded from macro '_GLIBCXX_DEPRECATED'
# define _GLIBCXX_DEPRECATED __attribute__ ((__deprecated__)) 
                                             ^