https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80950
--- Comment #3 from 陈林熙 <kmp53 at sina dot com> ---
You're right. ISO IEC 14882 explicitly illustrates this.
In GCC5.3, you can write a global function:
template<class T> int (get) {}
Cheat the compiler.
