Potential of a compiler that creates the executable at once

[Dennis]

On Friday, 11 February 2022 at 06:33:20 UTC, Walter Bright wrote:
> Now suppose X.obj and Y.obj both define foo. Link with:
>
>     link X.obj Y.obj A.lib B.lib C.lib
>
> You get a message:
>
>     Multiple definition of "foo", found in X.obj and Y.obj

Unless your compiler places all functions in COMDATs of course.

https://github.com/dlang/dmd/blob/a176f0359a07fa5a252518b512f3b085a43a77d8/src/dmd/backend/backconfig.d#L303
https://issues.dlang.org/show_bug.cgi?id=15342