On Sun, May 8, 2016 at 7:08 PM, Anthony Tavener wrote: > TL;DR: Constant string like "fontColor" can (rarely) come out like > "\220\552\663\1" after foreign call to OpenGL. It may be flambda-related, as the following problem looks much like it: https://github.com/LaurentMazare/tensorflow-ocaml/issues/7 I hit that last week with flambda. The problem there is too aggressive optimization on an ignore statement, but if the OpenGL bindings, or flambda is to blame is a bit up in the air to me. -- J.