Agreed, although things I immediately think of are:

1. Is "anything but gcc" actually supported by the project? Do they have a goal of supporting other compilers or possibly an explicit decision not to support other compilers?

2. If they do support other compilers, how did the "d" suffix make it in the first place? That's something I would expect the dev or CI to catch pretty quickly.

3. Does gcc behave any differently with the "d" suffix not there? (I would think a core dev would know that off the top of their head, so it's possible they looked at it and decided it wasn't worth it. One would hope they'd comment on the PR though if they did that). If it does, this could introduce a really hard-to-track-down bug.

I'm not defending Oracle here (in fact I hate Oracle and think they are a scourge on humanity) but trying to approach this with an objective look.