On Tuesday, 30 June 2020 at 16:36:45 UTC, H. S. Teoh wrote:
And on that note, this implicit static -> dynamic array
conversion is seriously a nasty misfeature that ought to be
killed with fire. It leads to bugs like this:
struct Database {
int[] data;
void set(int[] _data) {
data = _data;
}
}
void myFunc(ref Database db) {
int[3] x;
db.set(x); // oops
}
If you want the compiler to stop you from accidentally keeping
references to stack variables past the end of their scope, you
need to annotate your functions @safe and compile with
-preview=dip1000: https://run.dlang.io/is/3VdDaN
Furthermore, the problem your example shows has nothing to do
with implicit static to dynamic array conversion, as without
@safe the same error can easily be committed with non-array
types: https://run.dlang.io/is/nBjibd
