Re: Deduction regression or improvement?

[Stefan Koch via Digitalmars-d]

On Tuesday, 8 March 2016 at 21:22:35 UTC, Johan Engelen wrote:

Hi all,
  Should the following compile or not?

auto foo(T)(T start, T end) {}
void main() {
    const SomeStruct a;
    SomeStruct b;
    foo(a,b);
}
See http://dpaste.dzfl.pl/15581af64747

DMD 2.068.2 compiles and does not complain.

DMD 2.069.2 gives deduction error: "cannot deduce function from argument types !()(const(SomeStruct), SomeStruct), candidates are: foo(T)(T start, T end)"

Is this a regression or intended? I did not find something about it in the release notes.

Thanks,
  Johan

const T is not T
Therefore this code shall not compile.