[clang] [clang] Assert the enum FPOpts and LangOpts fit into the storage (PR #126166)

[Florian Mayer via cfe-commits]

fmayer wrote:

> > > Not sure I understand your question? Which assertion? `clang.exe t.c` is triggering an assertion?
> > 
> > 
> > I don't understand why you say
> > > The value `CX_None` is the defaut value given to the `Range` when no `fcomplex-arithmetic` is used on the command lin
> > 
> > 
> > but imply it does not need to be stored in the bitfield. If you patch this CL, and change the size for `ComplexRange` back, you will see it that it fails the assertion I added if you run the clang test suite.
> 
> OK. I see the issue. Thanks. I think this should be titled [NFC][Clang] YOUR TITLE. If you don't want to make it NFC then you need to add a LIT test :-) Not sure you can make it fail with a LIT test.

What do you mean? Of course you can't fail the assertion now that the offending code is fixed.

https://github.com/llvm/llvm-project/pull/126166