[Proposal] Switch to the Universal CRT on Windows.

[Kagamin]

On Wednesday, 1 July 2026 at 12:37:22 UTC, Dennis wrote:
> In my own code I avoid libc as much as I can, using 
> `CreateFileW` instead of `fopen` for example. Only a few 
> essentials like memcpy and memset remain since LDC sometimes 
> emits calls to that even when you don't write them yourself.

```
extern(C):
void* memset(void* dest, int c, size_t count)
{
	RtlFillMemory(dest,count,cast(ubyte)c);
	return dest;
}
int memcmp(in char* b1, in char* b2, size_t count)
{
	foreach(i;0..count)if(b1[i]!=b2[i])return b1[i]-b2[i];
	return 0;
}
void* memmove(void* dst, in void* src, size_t count)
{
	RtlMoveMemory(dst,src,count);
	return dst;
}
void* memcpy(void* dst, in void* src, size_t count)
{
	return memmove(dst,src,count);
}
```
Not sure how slow is this `memcmp` though.