[Issue 20719] Self referential struct definition causes stack overflow

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20719

Dlang Bot <dlang-bot at dlang.rocks> changed:

           What    |Removed                     |Added
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--- Comment #5 from Dlang Bot <dlang-bot at dlang.rocks> ---
@benjones created dlang/dmd pull request #11083 "fix issue 20719 by passing
previously seen structs to isTypeIsolated …" fixing this issue:

- fix issue 20719 by passing previously seen structs to isTypeIsolated
recursive calls

https://github.com/dlang/dmd/pull/11083

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