Need help with Windows linkage ( DMD using ImportC)

[Carl Sturtivant]

On Monday, 4 March 2024 at 21:21:20 UTC, Carl Sturtivant wrote:
> ```
> blah.obj: error LNK2019: unresolved external symbol _mul128 
> referenced in function MultiplyExtract128
> blah.obj: error LNK2019: unresolved external symbol 
> __shiftright128 referenced in function MultiplyExtract128
> blah.obj: error LNK2019: unresolved external symbol _umul128 
> referenced in function UnsignedMultiplyExtract128
> blah.obj: error LNK2019: unresolved external symbol __stosb 
> referenced in function RtlSecureZeroMemory
> blah.obj: error LNK2019: unresolved external symbol 
> __readgsqword referenced in function NtCurrentTeb
> blah.obj: error LNK2019: unresolved external symbol 
> __imp_MapViewOfFileNuma2 referenced in function MapViewOfFile2
> blah.obj: error LNK2019: unresolved external symbol 
> __imp_CharUpperW referenced in function ua_CharUpperW
> ```

I forced linkage of these unused symbols as follows, but it would 
be nice to have a clean way to proceed.
```D
extern(C) {
     int _InterlockedExchangeAdd(int* Addend, int Value) { return 
0; };
     long _InterlockedExchangeAdd64(long* Addend, long Value) { 
return 0; }
     void _mul128() {};
     void __shiftright128() {};
     void _umul128() {};
     void __stosb() {};
     void __readgsqword() {};
     void __imp_MapViewOfFileNuma2() {};
     void __imp_CharUpperW() {};
}
```
I got the D signatures of the first two so as to generate the 
correct linkage by using ImportC to translate the inclusion of 
`Windows.h` into a .di file, and searching.