Re: Query about variable initialization

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

On 20 June 2018 at 19:48, Evan Lloyd <Evan.Lloyd@arm.com> wrote:
> Hi Ard, Leif.
> I've noticed a number of comments like Ard's recent "We don't permit initialized automatic variables.",
> and similar changes have been made to Sami's AcpiView.  Note: I'm not objecting to doing it the way maintainers prefer, which is why this is not a response.
>
> My understanding was that the CCS was changed some time back to remove the restriction on initializing variables (and I further think I remember Leif being a prime mover in that).

I don't remember, to be honest. But I think it is a stupid rule, and
so if we haven't already, I hope we can get rid of it.

IIRC, this limitation had something to do with a particularly nice
exhibit in the Tianocore toolchain museum that generated bigger
binaries for initialized automatic variables (as compared to
assignments performed separately). But let's not get into the
toolchain situation, shall we?

> If that is the case, I suspect the real problem is with ECC.py, which still whinges about it, so probably needs fixing.
> Can you confirm that I haven't got a firm grasp on the wrong end of the stick, please?
>

I could not find the limitation in the current version of the CCS, and
so whether it was there at /some/ point doesn't seem relevant to me.
We could file a bugzilla, and/or propose a patch that removes this
part from ECC.py (although I am not touching the python code if I can
avoid it)