On Sunday, 4 February 2018 at 20:15:47 UTC, bpr wrote:

Which benefits of C are lost?

Ability to interface with C using C header files of a target library\executable as-is. Being able to understand the interfaces your operating system provides, described on the language it uses, is a huge criteria to pick C for your particular task.

Close-to-OS\Kernel-space\embedded seems to me as the main use case for C. It is the main C's benefit - you can interact with huge code blobs that you cannot rewrite, because you speak the same language. D does not, AFAIK, offer C header parsing.

Stuff like https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html ... It all takes years to build all these tools and gimmicks. If you can't use\reuse them from D, you'd beter be off writing in C imo.

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