[Issue 18541] comparison `==` of two typeid() should always be rewritten as a "is"

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18541

--- Comment #2 from Basile B. <b2.temp at gmx.com> ---
(In reply to Steven Schveighoffer from comment #1)
> I thought in the cases of DLLs, the typeids from different object files
> could be identical, but different instances.

Nobody has said you're wrong. It's even a case where the lowering is invalid.

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