Sebastian Wilzbach

@scarface-one no need to close this PR. It's better to keep it, s.t. the discussion isn't split over multiple places and it's easier for people to follow. I will reopen...

Hmm, ideally we would add a testcase to prevent regressions, but it doesn't look like that's easy to do here. Maybe we can add a file to the `dmd`'s testsuite?...

> std.exception.doesPointTo? Sorry for not mentioning that one. It's pretty useless (and in the wrong module): >If target is a pointer, a dynamic array or a class, then these functions...

Argh, the spuriously failing std.regex due to its high memory consumption is getting more and more annoying. See also: https://issues.dlang.org/show_bug.cgi?id=18411

> Any reason to not use the &whole[0] style rather than whole.ptr? Yes - `isSliceOf` should work for empty arrays too, e.g. ``` assert(null.isSliceOf(null)); ```

> Nothing can't be a part of nothing. So you would treat `null` like FP's `NaN` where the default value is poison and yields `false`? Interesting thought! The problem here...

Looks like a spurious failure.

> But I can't mark them as deprecated as phobos will fail to build. Well, all tests that use them need to be marked as deprecated too then (or use...

> Also, I don't think that Circle CI failure is my fault: it says that Dscanner failed. I didn't change anything about Dscanner. Yep, not your fault. The GC is...

Thanks for the ping and sorry for not clarifying this. New symbols need the following: - a changelog entry - approval from @andralex - full ddoc documentation headers Some CI...