Bug 6823 – Shared Delegates Should Implicitly Cast to Nonshared

Code Example: synchronized class Thing { void doSomeWork(void delegate() work) { work(); } void work() {} } void main() { auto th = new Thing(); th.doSomeWork(&th.work); } This example won't compile because the type of `&th.work` is `void delegate() shared`, which will not implicitly convert to `void delegate()`. This type is probably correct - it's safe to share that delegate between threads, but since it's also safe to NOT share that delegate between threads, the delegate should implicitly cast to non-shared. This is a large problem for code using shared data because `void delegate() shared` does not parse as a type. The current workaround is to insert a cast to `void delegate()` at the call site.

I'm not sure on the type conversion aspect but `void delegate() shared` has worked for years (at least < 2.060LD)