Yes, all I can see is code that checks if performance exists first, then
uses a fallback if not (on current incoming). Do you have a specific stack
trace showing where in the code it fails for you?

On Mon, Jul 25, 2016 at 3:24 AM, Gaurav Dewan <[email protected]>
wrote:

> Based on quick read of C++ specs (although more thorough reading of C++
> specs would be required),
> (1) std::chrono::high_resolution_clock::now is declared to be
> no-except(cannot throw exceptions).
> (2) high_resolution_-clock may be a synonym for system_clock or
> steady_clock
>
> When calling this function in Safari ASM.JS worker(Mac),
> The test program is same as:
> https://github.com/kripken/emscripten/issues/2980
> It's just that this asm.js is loaded from javascript webworker.
>
> Function *__ZNSt3__16chrono12steady_clock3nowE *calls 
> *__ZNSt3__120__throw_system_errorEiPKc
> (via *invoke_vii).
> Shouldn't emscripten fallback to Date.now() if Performance.now() is not
> implemented ?
>
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