[Bug c/63878] Variables of incomplete type can be defined with -fno-fat-lto-objects

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63878

--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
This is probably essentially the same as bug 24293 (reporting such an 
issue with -fsyntax-only).