https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65828
--- Comment #1 from Steven Noonan <steven at uplinklabs dot net> --- If you want a nice tarball with a ready-to-go repro case, I've put it here: https://www.uplinklabs.net/files/lto-65828.tar.xz Should just be able to run something like: $ /usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/lto1 -quiet -dumpdir .libs/ -dumpbase libglib-2.0.so.0.4400.0.wpa -mtune=generic -march=x86-64 -mtune=generic -march=x86-64 -auxbase libglib_2_0_la-gallocator -O2 -O2 -version -fno-trapv -fPIC -fltrans-output-list=libglib-2.0.so.0.4400.0.ltrans.out -fwpa -fresolution=libglib-2.0.so.res @ccWGeoup.args from inside the extracted directory and see the issue.
