On Wednesday, 5 January 2022 at 04:35:12 UTC, Tejas wrote:
```d
import std.stdio:writeln;
ref int func(return ref int a){
a = 6; // modifies a as expected
return a;
}
void main(){
int a = 5;
auto c = func(a); // I expected c to alias a here
c = 10; // Expected to modify a as well
writeln(a); // prints 6 :(
}
```
The [spec](https://dlang.org/spec/function.html#ref-functions)
states:
Ref functions allow functions to return by reference, meaning
that the return value must be an lvalue, and the lvalue is
returned, not the rvalue.
Then why does the reference to `a` not get returned ?
It is returned. But initializing `c` with it makes a copy. This
will mutate `a`:
```
func(a) = 10;
```
