[Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87525

--- Comment #20 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
This seems to make sense.  One should clone extern inline only if something
useful can be propagated across I suppose. Patch is OK with some comment and
testcase.