[clang] [Clang][Sema]: Allow flexible arrays in unions and alone in structs (PR #84428)

[Erich Keane via cfe-commits]

erichkeane wrote:

> > Left my comment on the main list
> 
> Sorry, I missed this. Where?

Bad phrasing: I jsut meant here: https://github.com/llvm/llvm-project/pull/84428#issuecomment-1987017272

I commented on the 'overall' patch, but then to do the 'needs revision', I needed to add a review message.

> 
> > It seems that Martin @ GCC isn't willing to make this change
> 
> Where?

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53548#c3

Albeit, it is 9 years old, but at the moment, it reflects my thoughts on this.

https://github.com/llvm/llvm-project/pull/84428