On Monday, 7 December 2020 at 04:13:16 UTC, Andrew Edwards wrote:
Given:
===============
extern(C):
char*[] hldr;
enum I = (1<<0);
struct S { char* ft; char** fm; int f; }
void main(){}
===============
How do I initialize an instance of S at global scope?
You cant. At the global scope the initializers must be runnable
at compile time, i.e using CTFE. I've tried to simplify what
would be required:
---
extern(C):
char*[] hldr;
enum I = (1<<0);
struct S { char* ft; char** fm; int f; }
void main(){}
enum char[8] FirstLevel = ['0'];
enum DoubleLevel = &FirstLevel[0]; // here
S[] s = [
S(
FirstLevel.ptr,
DoubleLevel, // error is here actually,
interesting
0),
];
---
D is not able of that :
/tmp/temp_7F835402B0F0.d:9:28: Error: cannot use non-constant
CTFE pointer in an initializer `&['0', '\xff', '\xff', '\xff',
'\xff', '\xff', '\xff', '\xff'][0]`
