It is intended that -Wall over-ride specific flags?

[Bruce Korb]

Hi,

On Thu, Aug 9, 2012 at 1:42 PM, Joseph S. Myers <joseph@codesourcery.com> wrote:
> On Thu, 9 Aug 2012, Bruce Korb wrote:
>> This command:
>>
>>    gcc -Wno-format-contains-nul -Wall -Werror
>>
>> falls over if a format string contains a nul byte.
>> I think it should not.  There needs to be a way for
>
> Indeed.  My model for how options should interact in such cases is
> appendix 1 of <http://gcc.gnu.org/ml/gcc/2010-01/msg00063.html>.

Our models agree.  My approach would be fairly simple.
if option A implies a setting for option B, then the state of
option B is checked before making a change.  If it is unset
from load time, it is changed.  Otherwise, the levels of
indirection used to set B are examined.  If it is greater than
the levels from A to B, it is modified and the indirection
count from A to B is saved with the setting.  A always gets
set with an indirection count of zero.

This would likely be my biggest foray into GCC, so nobody
hold your breath. :)