[Bug lto/71018] lto + ipa-pta causes exception with trivial boost::ptime code.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71018

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Possibly related to PR70760 or PR70785.  Can't reproduce with GCC 6 branch head
(so I'd say 70785), building GCC 6.1.0 right now.