[m-dev.] new failures of putback tests

[Julien Fischer]

Hi Zoltan,

On Wed, 23 Dec 2020, Zoltan Somogyi wrote:

> In late november, the disk in my iMac went bad. I got it replaced and restored
> my files from the TimeMachine backup, but the new disk came with MacOS 11 Big Sur
> on it, while the old one had MacOS 10.11 El Capitan. This came with a new version
> of Xcode, Xcode 12.3 (12C33), whose gcc is Apple clang version 12.0.0 (clang-1200.0.32.28).
>
> The reason why I mention the above is that after I installed the most recent rotd,
> I did a bootcheck of an unmodified workspace in hlc.gc, and got three test case
> failures I have not seen before (attached). They all involve putting bytes back into
> the input stream. These test cases do NOT fail on my laptop, which runs Linux
> and whose C compiler is gcc 7.5.0.
>
> Is this a known issue?

No, it is not a known issue. The grade in the attached file was none.gc
not hlc.gc; is the problem occuring with the former, latter or both?

(I'm just installing the latest rotd on my Mojave system to see if the
same occurs on that.)

Julien.