I am using a fork of the official thing and also build on appveyor, so, the stack is the same. Phil On Sun, May 28, 2017 at 4:41 PM, Milan Vavra via Pharo-dev < pharo-dev@lists.pharo.org> wrote:

---------- Forwarded message ---------- From: Milan Vavra <vavra_milan@yahoo.com> To: pharo-dev@lists.pharo.org Cc: Bcc: Date: Sun, 28 May 2017 07:41:36 -0700 (PDT) Subject: Re: [Vm-dev] multiple crashes on macOS Sierra

...

I hope to find the reason why this happens.

Good luck and, of course, if the problem goes away by using a custom built debug build -- there's more fun in store trying to find out if/what goes wrong with the optimizations used in the release build.

Turning off optimizations with -O0 could be a first step to verify if release build C compiler optimizations are to blame.

Because the C compiler does optimize things and sometimes optimizes things away that it should not.

Best Regards,

Milan Vavra

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