May 11, 2020
just open a console in your terminal, put a typo in a source to get an error (for example line 792 of declaration.d, rename isOverDeclaration -> isOveDeclaration) and

  $ make -f posix.mak > a.out

I get things like

> ERROR: dmd/declaration.d(792): Error: no property isOveDeclaration for type dmd.dsymbol.Dsymbol, did you mean dmd.dsymbol.Dsymbol.isOverDeclaration?

Not good.
May 11, 2020
On Monday, 11 May 2020 at 22:33:16 UTC, Basile B. wrote:
> just open a console in your terminal, put a typo in a source to get an error (for example line 792 of declaration.d, rename isOverDeclaration -> isOveDeclaration) and
>
>   $ make -f posix.mak > a.out
>
> I get things like
>
>> ERROR: dmd/declaration.d(792): Error: no property isOveDeclaration for type dmd.dsymbol.Dsymbol, did you mean dmd.dsymbol.Dsymbol.isOverDeclaration?
>
> Not good.

https://issues.dlang.org/show_bug.cgi?id=20822

I make some noise here because this is a serious regression for anyone willing to put his hands in the compiler.