dmd 2.063 beta 5

[Walter Bright]

On 5/23/2013 2:05 AM, Don wrote:
> NO NO NO NO. I am violently opposed to this release.
>
> This beta contains the worst language misfeature of all time. It's silently
> snuck in under the guise of a bugfix.

Don has an excellent point. His case is bolstered by this causing Tango2 to fail 
to compile with error messages that have no obvious relationship with this change.

Worse, as Don points out, this can result in silent breakage. Not everyone 
writes code that is 100% tested, and shipping code that no longer works would 
make someone justifiably very upset.

The -transition=field detects such cases, but the user will not necessarily know 
to run it.

So, I agree with Don. As it is, this is unacceptable, despite my agreement that 
it does make the language better. Therefore, I propose the following addition of 
a warning:

------------------------------
    const int q = 5;

Warning: const field with initializer should be static or enum.
------------------------------

Over time, this can be upgraded to a deprecation and then an error.

After a suitably long period of time as an error, then we can allow it with the 
new behavior.