[Bug lto/81440] -Wlto-type-mismatch warning with flexible array in struct

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81440

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Patch candidate:
https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01942.html