Summary: C++17 introduce guaranteed copy elision which omits constructor calls. In ownership analysis, we depended on these constructor calls to acquire ownership. In particular, when a method returns struct, previously, a constructor was used to acquire ownership. In this diff, we acquire ownership of the returned structs directly.
Reviewed By: mbouaziz
Differential Revision: D9244302
fbshipit-source-id: ae8261b99
Daiva Naudziuniene