[PATCH v2] c: Silently ignore pragma region [PR85487]

[Jeff Law]

On 11/13/20 7:57 AM, Austin Morton wrote:
> On the contrary, as a user of GCC I would much prefer a consistent
> behavior for #pragma region based purely on GCC version.

You can get consistent behavior with a command line argument and it's
much more useful over time as the world changes.


>
> IE, so you can tell people:
>     "just update to GCC X.Y and those warnings will go away"
> rather than:
>     "update to GCC X.Y and pass some new flags - but make sure
>      not to pass them to old GCC versions, since that will generate
>      a new warning"

I'm aware of those benefits.  But I would still claim that embedding
knowledge of other toolchain's pragmas into GCC  itself is just plain
wrong from a design standpoint.   A flag to allow specifying pragmas to
ignore would be much more useful and gets you the same level of
consistency with a much higher degree of control and future proofing.

Being able to specify them in a file would be even better (IMHO)


I'm not going to ACK this patch.  However, I won't object if someone
else wants to ACK it.


Jeff