I have patched my /framework/base with the pie patch. The next 2 builds are both failing on errors
error: invalid file path ‘frameworks/base/core/res/res/values/config.xml.orig’.
error: invalid file path ‘frameworks/base/core/res/res/values/config.xml.rej’.
error: invalid file path ‘frameworks/base/core/res/res/values/strings.xml.orig’.
So I have to reverse the patch