digitalmars.D.bugs - [Issue 20000] New: Casting to interfaces arbitrarily disallowed in
- d-bugmail puremagic.com (32/32) Jun 23 2019 https://issues.dlang.org/show_bug.cgi?id=20000
https://issues.dlang.org/show_bug.cgi?id=20000 Issue ID: 20000 Summary: Casting to interfaces arbitrarily disallowed in safe code Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: normal Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: n8sh.secondary hotmail.com ``` interface A {} class C1 {} class C2 : A {} bool isA(Object obj) safe { if (auto a = cast(A) obj) return true; return false; } void main() { import std.stdio : writeln; writeln(isA(new C1())); writeln(isA(new C2())); } ``` --
Jun 23 2019