[m-rev.] systematic problem with tests/valid* for C#

[Julien Fischer]

On Mon, 2 Oct 2023, Zoltan Somogyi wrote:

> The attached diff fixes one problem for one test case in C# grade,
> but another, more systematic problem still prevents it, and other tests
> in valid/valid_seq from passing. This is that
>
> - the tests in these directories check whether the compiler can handle
>  each test case by trying to build the target language file for the selected
>  grade, but
>
> - the target suffix selected for C# grades, .cs, is taken by the mmake system
>  as "build all the .c (NOT .cs) files".
>
> This then fails, because the .opt files in stage 2 contain C# foreign procs,
> which the compiler now complains about as a symptom of a grade mismatch,
> which is a correct diagnosis for a compiler that is asked to build a .c (NOT .cs) file.
>
> We have long had .all_cs as a synonym for .cs for this exact reason
> (just as we have .all_os as a synonym for .os), but stopped short of
> switching the meaning of a target with a .cs suffix to mean a C# source file.
>
> Would anyone object to making that step now?

No.

> Specifically, I propose that both mmake and mmc --make should have the
> rule that ONLY the suffix  ".all_Xs" means "all .X files".

That's fine.

Julien.