section attribute of a function template is silently ignored in GCC

I'm trying to put a specific set of functions into a separate section and got trouble doing it with GCC.

namespace /* anonymous */ {
  [[gnu::section(".mysection")]]
  void regular_func() { }

  template <class T>
  [[gnu::section(".mysection")]]
  void template_func() { }
} // namespace /* anonymous */

void (*ptr1)() = &regular_func;
void (*ptr2)() = &template_func<int>;

With clang, the symbols for both of regular_func and template_func<int> are placed in .mysection as I expected.

$ clang++ -std=c++14 a.cpp -c && objdump -t a.o | grep -E "regular|template"
0000000000000000 l     F .mysection 0000000000000006 _ZN12_GLOBAL__N_112regular_funcEv
0000000000000010 l     F .mysection 0000000000000006 _ZN12_GLOBAL__N_113template_funcIiEEvv

But with GCC, the function template is not placed in .mysection, but in the .text.* section.

$ g++ -std=c++14 a.cpp -c && objdump -t a.o | grep -E "regular|template"
0000000000000000 l     F .mysection 0000000000000007 _ZN12_GLOBAL__N_112regular_funcEv
0000000000000000 l     F .text  0000000000000007 _ZN12_GLOBAL__N_113template_funcIiEEvv

I'm using clang-3.7.1 and gcc-5.3.0.

How can I force gcc to put the template-instantiated function in a separate section?