http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60984
--- Comment #8 from David Edelsohn <dje at gcc dot gnu.org> --- I reproduced the failure starting with both GCC 4.6.3 and GCC 4.8.1. However, I am seeing some very strange results: r209278 built in /tmp/20140412 SUCCESS r209300 (trunk before branch) built in /tmp/209300 SUCCESS r209304 (branch before DEV-PHASE commit) built in /tmp/209304 SUCCESS r209304 built in /tmp/G49 FAIL I am testing again with /tmp/Z49 This is starting to look like either the build directory name or build path length affects this failure.