gunzip this file (it's a c header file base64 encoded from googlesource.com) to Looper.h and load it with 28.2 emacs -Q and it'll infinite loop pegging one core. Expected behavior: load the file, and let me base64-decode it. It's a long line, but not _that_ long. If you don't want my gz file, this url will get you the same file: https://android.googlesource.com/platform/system/core/+/android-5.0.0_r2/include/utils/Looper.h?format=TEXT Chris