[Bug c++/68023] 4.8.4 generates good code where 5.2 generates bad code

[barto at cambridgesemantics dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68023

--- Comment #1 from David Barto <barto at cambridgesemantics dot com> ---
Created attachment 36544
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36544&action=edit
Configuration for GCC 5.2