[Bug libstdc++/63329] std::bind does not define argument_type

[thomas.sanchz at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63329

--- Comment #1 from Thomas Sanchez <thomas.sanchz at gmail dot com> ---
BTW, I forgot to add that the compiler is invoked with this command:
   g++ -std=c++11 test.cpp

Also, funny thing, with clang, it is the first one that do not compile :)

Thanks,