[Patch, Fortran] PR33455 - reject MERGE with character arguments of different length

[Tobias Burnus]

François-Xavier Coudert wrote:
> OK, with or without the following suggestions. What about making it
> available for other intrinsics?
>   
I knew I would overlook something. Thanks for this suggestion!

> Maybe add tests that don't error out
>   
I inserted your examples into the test-case file.


In another email, you wrote:
> OK. Thanks for taking care of these transfer-related PRs.

Well, I'm actually doing the diagnostic/accepts-invalid part only; the
real work is to get the wrong-code/rejects-valid to work ;-)


Thanks for the reviews.

Tobias