This dmd internal bug (or lack of a bug?) blew my mind, thought I'd share:

https://github.com/dlang/dmd/pull/16752

On Wednesday, 24 July 2024 at 20:15:51 UTC, Dennis wrote:

This is why I think that a proper internal type is required for manipulating bit sets. The AndExp and its consort dont see the relationship between the operands (they are even promoted to int...

That reminds a bug reported a long time ago: switching over an enum is not safe at all because the switch condition is then promoted to int.

• https://issues.dlang.org/show_bug.cgi?id=24341
• https://issues.dlang.org/show_bug.cgi?id=21460