Re: Error: cannot use non-constant CTFE pointer in an initializer `cast(immutable(char)*)TEST`

[Tejas via Digitalmars-d-learn]

On Saturday, 11 June 2022 at 11:51:43 UTC, Tejas wrote:
On Saturday, 11 June 2022 at 10:07:46 UTC, test123 wrote:
how to work this around.
```d
__gshared const TEST = import(`onlineapp.d`);
extern(C) void main(){
        __gshared  bin_ptr = TEST.ptr;
}
```

```sh
dmd2 -betterC -J. onlineapp.d
onlineapp.d(3): Error: cannot use non-constant CTFE pointer in 
an initializer `cast(immutable(char)*)TEST`

```

Maybe try putting `__gshared  bin_ptr = TEST.ptr;` inside a 
`shared static this(){}`?

I mean, write it like:
```d
__gshared  bin_ptr;
shared static this()
{
    bin_ptr = TEST.ptr;
}

__gshared const TEST = import(`onlineapp.d`);


extern(C) void main()
{
}
```

But `bin_ptr` becomes a global in this case :(

Oh wait, `-betterC` is being used ;(

hmm...

Use 
[pragma(crt_constructor)](https://dlang.org/spec/pragma.html#crtctor) instead

```d
__gshared immutable(char)* bin_ptr;

pragma(crt_constructor)
void init_ptr()
{
    bin_ptr = TEST.ptr;
}

__gshared TEST = import("this.d");

extern(C) void main()
{
}
```

```sh
(base) [tejasgarhewal@fedora D]$ ldc2 -J. -betterC this.d
(base) [tejasgarhewal@fedora D]$ ./this
```