[Issue 17380] Compiler segfaults on undefined symbol

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17380

--- Comment #2 from Walter Bright <bugzilla at digitalmars.com> ---
I don't think it is a regression, either.

https://github.com/dlang/dmd/pull/6969

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