Briefly looking at the code it seems like several global variables involved should be volatile: n_capabilities, enabled_capabilities, and capabilities. Perhaps in a loop like in scheduleDoGC the compiler moves the reads of n_capabilites or capabilites outside the loop. A failed requestSync in that loop would not get updated values for those global pointers. That particular loop isn't doing that optimization for me, but I think it could happen without volatile. Ryan On Thu, Oct 27, 2016 at 9:18 AM, Ben Gamari <ben@smart-cactus.org> wrote:
Simon Marlow <marlowsd@gmail.com> writes:
I haven't been able to reproduce the failure yet. :(
Indeed I've also not seen it in my own local builds. It's quite an fragile failure.
Cheers,
- Ben
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