Compiler is calling `_memset64` in betterC

[Paul Backus]

On Sunday, 18 October 2020 at 16:04:55 UTC, Koro wrote:
> I'm writing a 'betterC' program and the compiler is generating 
> a call to '_memset64' if I have an array literal where the 
> elements are the same.

It's a known bug:

https://issues.dlang.org/show_bug.cgi?id=17778

My guess is that the reason it hasn't been fixed is that (a) it's 
possible to work around it, and (b) the problem is in the 
compiler backend, and few people understand that code well enough 
to fix it.