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Re: G++ namespace association extension

From: Jason Merrill <jason at redhat dot com>
To: Jonathan Wakely <jwakely dot gcc at gmail dot com>
Cc: gcc at gcc dot gnu dot org, jason at gcc dot gnu dot org
Date: Mon, 09 Jul 2012 15:18:27 +0200
Subject: Re: G++ namespace association extension
References: <CAH6eHdSnLMvppxPPn5zajDn6HZ9n2f2YoYE6fGs7PB37rReJng@mail.gmail.com>

On 07/09/2012 01:26 PM, Jonathan Wakely wrote:

http://gcc.gnu.org/onlinedocs/gcc/Namespace-Association.html says:

"Caution: The semantics of this extension are not fully defined. Users
should refrain from using this extension as its semantics may change
subtly over time. It is possible that this extension will be removed
in future versions of G++. "

Is it safe to assume that the semantics are now fixed to match those
of C++11 inline namespaces and will not change unless removed?

Yes, but people should use inline namespaces instead; we should deprecate this form and then remove it in 4.9.

Jason

References:
- G++ namespace association extension
  - From: Jonathan Wakely

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