[Bug c++/86769] g++ destroys condition variable in for statement too early

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86769

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 60356
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60356&action=edit
A Scalar testcase which shows this is a regression from GCC 4.9.x now