return ref this -dip1000

[vit]

On Monday, 11 December 2017 at 20:44:06 UTC, Eugene Wissner wrote:
> On Monday, 11 December 2017 at 20:40:09 UTC, vit wrote:
>> This code doesn't compile with -dip1000:
>>
>> struct Foo{
>>     int foo;
>>
>>
>>     ref int bar(){
>>
>>         return foo;
>>     }
>> }
>>
>> Error: returning `this.foo` escapes a reference to parameter 
>> `this`, perhaps annotate with `return`
>>
>>
>> How can be annotated this parameter with 'return ref' ?
>
> struct Foo{
>     int foo;
>
>
>     ref int bar() return {
>
>         return foo;
>     }
> }

thank you.