[Bug c/59749] unused warning not emited for unused static struct unles -save-temps is used

[martin at netbsd dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59749

--- Comment #1 from Martin Husemann <martin at netbsd dot org> ---
Created attachment 31794
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31794&action=edit
unused_test.i file from -save-temps