This project contains only the cpp/src files from upstream. To update: git merge aosp/upstream-master If upstream has changes outside the cpp/src directory (likely), it will get conflicts on the modified files. To drop the changes to the unmerged directories: git rm -rf data git rm -rf java git rm -rf cpp/data git rm -rf cpp/ext git rm -rf cpp/tools git commit # Local changes Fixed uninitialized variable. See bug 116114182 for details.