[Bug c++/69820] Test was miss compiled with -O3 option.

[vsevolod.livinskij at frtk dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69820

--- Comment #1 from Vsevolod Livinskiy <vsevolod.livinskij at frtk dot ru> ---
Created attachment 37690
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37690&action=edit
Preprocessed testcase.