https://issues.dlang.org/show_bug.cgi?id=21545
Issue ID: 21545 Summary: [dip1000] cannot assign ref returning delegate to variable with lower attributes Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: normal Priority: P1 Component: dmd Assignee: nob...@puremagic.com Reporter: qs.il.paperi...@gmail.com Using -preview=dip1000, one cannot assign e.g. a pure delegate to a delegate type variable without pure annotation: void main() { int i; alias DG = ref int delegate() @safe; DG dg = delegate ref() @safe => i; } This errors on the assignment of DG. Without the preview switch, it compiles. --