[Issue 20578] Parallel GC causes segfault in dl

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20578

Hiroki Noda <kubo39 at gmail.com> changed:

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                 CC|                            |kubo39 at gmail.com

--- Comment #1 from Hiroki Noda <kubo39 at gmail.com> ---
I'm not sure but https://github.com/dlang/druntime/pull/2904 may fixes this,
which has been merged into dmd 2.090.1.

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