TLS/GC issues on macOS

[Jacob Carlborg]

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: https://github.com/ldc-developers/ldc/issues/2187
> 
> 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.

[1] 
https://github.com/ldc-developers/druntime/blob/4e745768c79f6b72f03af108a845145e382e71e4/src/rt/sections_elf_shared.d#L1005-L1011

-- 
/Jacob Carlborg