[Issue 20484] Regression: runtime cannot handle shared(AA)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20484

--- Comment #2 from James Blachly <james.blachly at gmail.com> ---
@ZombineDev: Thanks for the details. Our codebase was already using
synchronization.

The runtime is still making a type error that causes compilation failure, but I
do not understand runtime internals well enough to appreciate whether the
offending block can simply be rolled back.

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