[patch] Fix pr14958 by using lexical contexts

[Richard Smith]

On Fri, May 3, 2013 at 7:40 AM, Rafael Espíndola <rafael.espindola at gmail.com
> wrote:

> I am not sure if the language linkage checks should use lexical or
> semantic contexts. If lexical, this patch fixes pr14958.


It should be lexical. Linkage specification declarations do not introduce a
scope, and the relevant rule is which innermost linkage specification an
entity is "declared within", which is a lexical notion (see [dcl.link]p4).

Patch LGTM. Have you looked for the same bug in other places where we check
the language linkage?
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