Hi,

I was using the emscripten package that comes with Ubuntu 13 until 
yesterday. Today I have setup a master checkout on Debian 7.4.
When compiling my existing code, both compiler produce the same working 
application on desktop browsers, like Chrome, Firefox, etc...

But when trying to run this code on iPad & iPhone with iOS 7, the browser 
just "hangs" and everything feels like it crashed.
It seems as if the 1.12 version without optimizations would work, but of 
course it is so slow that iPad is just rendering oner frame every ten 
seconds or something. But at least there it works. As soon as I activate 
optimizations, it breaks though...

This is the command line I use:
emcc MyProject.bc --preload-file Assets -o MyProject.js -s 
TOTAL_MEMORY=33554432 --js-library native_impl.js -O2

I also tried without ASM_JS and memory growth. Still doesn't work.

So to summarize: The above command line produces working app for iPad & 
iPhone with the 1.4.9 version but breaks on 1.12 version. It still seems to 
work in 1.12 when I disable optimization. And of course it works on desktop 
browser in all cases. So this seems to be a support issue. Maybe some stuff 
is not supported atm on iPhone. I don't know.

Any ideas on what I can try?

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