https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65017
--- Comment #6 from David Binderman <dcb314 at hotmail dot com> --- (In reply to Richard Biener from comment #5) > Can't reproduce when building GCC with clang 3.3 like you specified above. I removed clang from the configure of gcc, rebuilt gcc, tried again and the problem went away ! A version of clang > 3.3 but <= 3.5 looks to be the culprit.