Bug 10917 – scope ref should be allowed

----- void foo(scope int* val) { } // ok void bar(scope ref int val) { } // error void main() { int x; foo(&x); // ok bar(x); } ----- 'scope ref int' is almost the same thing as 'scope int*', except that 'ref' cannot be null, and 'ref' is simpler to use in code since a user can copy by value with the assignment syntax instead of having to dereference the pointer first. Note that addresses can be extracted from both pointers and references: ----- int* ptr; void foo(scope int* val) { ptr = val; // disallowed once scope is properly implemented } void bar(/*scope*/ ref int val) { ptr = &val; // equivalent to &main.x } void main() { int x; foo(&x); bar(x); } ----- So scope ref is very much useful to have. And yeah, I realize scope does practically nothing in the compiler right now (e.g. http://forum.dlang.org/thread/[email protected]#post-mailman.391.1348770797.5162.digitalmars-d-learn:40puremagic.com).

Thanks to eco for reporting the dupe. *** This issue has been marked as a duplicate of issue 8121 ***