[cfe-dev] ParseClassSpecifier: can "unions" inherit?
doug.gregor at gmail.com
Thu Sep 4 09:58:12 PDT 2008
On Thu, Sep 4, 2008 at 12:55 PM, Ted Kremenek <kremenek at apple.com> wrote:
> On Sep 4, 2008, at 9:45 AM, Doug Gregor wrote:
>> In the C++ grammar, unions can have base classes, but it's
>> semantically incorrect according to [class.union]p1. So, the parser
>> parses it and Sema gives an error (see Sema::ActOnBaseSpecifier).
>> - Doug
> Okay, that makes sense. If the Parser is suppose to strictly follow the
> grammar then it makes sense why the error is handled in Sema.
There's a philosophy behind here, too: if we can parse it
unambiguously because it's obvious what the user was trying to do,
it's better to parse it and give an error in Sema rather than fail to
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