Template type inference problem

[kdevel]

On Wednesday, 2 October 2024 at 08:55:15 UTC, Manu wrote:
> Does anyone understand why this doesn't work?
>
> void f(T)(const(T)[] x, const(T)* y) {}
> void test()
> {
>     int*[] x;
>     const int* y;
>     f(x, &y);
> }
>
> error : template `f` is not callable using argument types 
> `!()(int*[],
> const(int*)*)`
>         Candidate is: `f(T)(const(T)[] x, const(T)* y)`
>
> Should this work? It looks like it should work to me.
> ...assuming T is inferred to be `int*`... which it's not clear 
> why it
> wouldn't be?
>
> The argument `y` is an exact match.

The second actual parameter to f!int is &y not y.

> The argument `x` requires a const promotion,

The type of x is int*[] and not const(int) [];