Re: std.int128 not working with -betterC enabled

[Matheus Catarino via Digitalmars-d-learn]

On Wednesday, 20 December 2023 at 18:16:00 UTC, Renato wrote:
I wanted to write a small program using betterC that needs to 
use int128.

This simple program works without -betterC:

```d
module dasc;

import std.int128;
import core.stdc.stdio;

extern (C):

int main() {
  auto n = Int128(128, 128);
  printf("n=%lu%lu", n.data.hi, n.data.lo);
  return 42;
}
```

But with -betterC:

```
dmd -L-ld_classic -betterC -run dasc.d
Undefined symbols for architecture x86_64:
  "__D3std6int1286Int1286__ctorMFNaNbNcNiNfllZSQBpQBoQBk", 
referenced from:
      _main in dasc.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to 
see invocation)
Error: linker exited with status 1

Compilation exited abnormally with code 1 at Wed Dec 20 19:11:56
```

I don't see anywhere whether int128 is supposed to work on 
-betterC. Is it not supported?

Would there be any reason not to use `core.int128`?

Currently, I used it to make a TigerbeetleDB client (Zig 
database) in D (betterC).
https://github.com/batiati/tigerbeetle-clients-benchmarks/blob/f86216834bd04e1e06bede2a2e31b64df0dc98f1/d/modules/tb_client.d#L12