[Bug c++/87646] Wrong code at -O3 and above (but not at -O2 and below)

[sukhovvl at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87646

--- Comment #1 from Vadim Sukhov <sukhovvl at gmail dot com> ---
Created attachment 44853
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44853&action=edit
Test case (compile with -std=c++11 -O3)