TLS/GC issues on macOS

Jacob Carlborg doob at
Thu Jan 3 19:35:08 UTC 2019

On 2019-01-03 13:58, Sönke Ludwig wrote:
> There appears to be a GC visibility issue of TLS sections on macOS when 
> multiple threads are involved. I added a test case to what looks like 
> the same issue:
> The question is, does anyone have enough insight on the TLS 
> implementation to make a quick diagnosis or fix?
> This is biting us pretty hard in our upcoming commercial project (DMD 
> has codegen issues on macOS), so any help would be highly appreciated.

I haven't tested anything, but I noticed this [1] difference between LDC 
and DMD.


/Jacob Carlborg

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