java/com/facebook/soloader/soloader.pro (6 lines of code) (raw):

# Ensure that methods from LollipopSysdeps don't get inlined. LollipopSysdeps.fallocate references # an exception that isn't present prior to Lollipop, which trips up the verifier if the class is # loaded on a pre-Lollipop OS. -keep class com.facebook.soloader.SysUtil$LollipopSysdeps { public <methods>; }