I am having a go at finding the cause but I can't promise to get results. I only set up an environment for compiling Espruino yesterday and I don't have much experience with C. I will be happy if I can give something back though.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I have added a comment on that issue.
I am having a go at finding the cause but I can't promise to get results. I only set up an environment for compiling Espruino yesterday and I don't have much experience with C. I will be happy if I can give something back though.