[PATCH] caret diagnostics

[Manuel López-Ibáñez]

2008/8/14 Robert Dewar <dewar@adacore.com>:
> Manuel López-Ibáñez wrote:
>>
>> 2008/8/14 Joseph S. Myers <joseph@codesourcery.com>:
>>>
>>> But in any case the default should be the default with no configure
>>> option, users liking it should find their makefiles work the same
>>> everywhere and users not liking it can add the opposite option.
>>
>> Then we are not going to get correct locations ever. New users do not
>> read the manual. Neither old users do. New functionality disabled by
>> default will be lost for both. I am fairly sure that a significant
>> percentage of GCC developers (not just users) do not know about
>> -fdiagnostics-show-option.
>
> Users are not beta testers. Forcing inconvenience on users to benefit
> developers is not justified for a relatively minor issue like this.
> Changing the default here would have a huge impact, I think probably
> some developers do not realize the impact that changing messages or
> output has on people developing large systems for which they expect
> stable compiler output, e.g. for test cases.

My proposal is to enable this while not in release mode (like we
enable checks and dump statistics and output from the optimizers), so
developers notice wrong locations and open a PR and maybe even fix
them. Then maybe let users or distributions configure the default as
they wish, with our releases defaulting to off.

Cheers,

Manuel.