[Bug c++/83756] gcc ICE in gimplify_expr on boost::call_once (-fms-extensions)

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83756

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|gcc (mingw64) 7.2.0 ICE in  |gcc ICE in gimplify_expr on
                   |gimplify_expr on            |boost::call_once
                   |boost::call_once            |(-fms-extensions)
           Keywords|                            |ice-on-valid-code

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
template <class Fp, class A0, class ...Args>     inline auto invoke(Fp && f, A0
&& a0, Args && ...args)  -> decltype(((*(a0)).*f)((args)...))  { }
template <class Fp, class A0> inline auto invoke(Fp && f, A0 && a0) ->
decltype((*(a0)).*f)  {
  return (*(a0)).*f;
}
struct A {
      void doA();
     void doB() { }
};
void A::doA() {
     invoke(&A::doB, this);
}