[m-rev.] for review: Disable uninitialized variable warnings in high-level C grades.

[Julien Fischer]

Hi Peter,

On Fri, 31 May 2019, Peter Wang wrote:

> scripts/mgnuc.in:
>    Disable uninitialized variable warnings in high-level C grades.
>    This is necessary but went (mostly) unnoticed because we happen to
>    disable uninitialized variable warnings for gcc on x86/x86_64 in
>    support of low-level C grades, and we suppress any and all warnings
>    if using clang.

IIRC, disabling all warnings was necessary with some very early versions
of clang -- we should probably re-enable them at some
point since we no longer support those versions of clang.

Julien.