[Issue 23389] ImportC: types from core.stdc.* are distinct types when imported from C

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23389

--- Comment #2 from dave287091 at gmail.com ---
If this is working as intended, then the error messages need to be fixed as
they currently are impossible to understand.

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