[Bug c++/60702] thread_local initialization

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60702

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2017-11-15 00:00:00         |2018-10-25
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=81880

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Another wrong-code example taken from
https://gcc.gnu.org/ml/gcc-help/2018-10/msg00116.html


class B
{
  int* x;
public:
  static thread_local B tmp;
  B() { x = new int(); }
  void f() { *x = 0; }
};

thread_local B B::tmp;

template<class T>
void f()
{
  B::tmp.f();
}

void g()
{
  B::tmp.f();
}

int main()
{
  //g();
  f<int>();
}


Unless the non-template g() is called first, the thread_local variable isn't
initialized.