[Bug c/61144] Invalid optimizations for extern vars with local weak definitions

[bugdal at aerifal dot cx]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61144

--- Comment #11 from Rich Felker <bugdal at aerifal dot cx> ---
Adding __attribute__((__used__)) to the static object suppresses the symptom in
case that helps to isolate what's causing it.