https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82221
--- Comment #3 from Josh Poimboeuf <jpoimboe at redhat dot com> --- This has been seen on Fedora GCC 7.1.1 and Debian GCC 6.2.0-3. This bug can be recreated with the above kernel git branch and the attached .config by typing "make ARCH=i386 arch/x86/events/core.o". I've also attached the preprocessed source which GCC produced when it reported the error.