Re: Default -fabi-version=0 for 4.9

[Jason Merrill <jason at redhat dot com>]

On 03/04/2013 03:46 PM, Jeff Law wrote:
> Seems reasonable.  Presumably -Wabi will warn folks if they're doing
> something that results in a different mangling?

Currently -Wabi warns about things that will are different in a later 
version; it would probably make sense to allow people to write something 
like -Wabi=2 to get warnings about changes from version 2 to the current 
version.

> A wiki page we can link to when questions arise (as they always will)
> which includes your rationale above and any hints (such as -Wabi) users
> can use to detect problems, -fabi-version= guidance for those who wish
> to keep old behaviour, etc would be helpful.

Absolutely.

Jason