[cfe-commits] [patch] PR10127/N3031 supporting decltype in nested-namespace-specifiers

[David Blaikie]

Now with better error recovery (utilizing CXXScopeSpec's
setInvalid(SourceRange) as is done elsewhere) & support for
non-crashing when used in member ref expressions like
a->decltype(foo)::bar() (including test cases for same) based on some
test cases suggested by Chandler Carruth.

- David

On Sun, Nov 6, 2011 at 10:15 PM, David Blaikie <dblaikie at gmail.com> wrote:
> Here's a patch that adds support for decltype in
> nested-namespace-specifiers. I've included test cases for use of this
> feature in both declarations and expressions (open to suggestions for
> other contexts that might benefit from coverage).
>
> I've also improved error recovery of the existing use of decltype (for
> declarations) & these new uses by calling DeclSpec
> setTypeSpecTypeError when errors are encountered while trying to parse
> a decltype-specifier. There's probably still some error recovery to
> improve, though, as I'm not currently doing anything with
> ActOnCXXNestedNameSpecifierDecltype's return value as I'm not sure
> what the best error recovery would be there. I suppose the
> CXXScopeSpec should at least be failed.
>
> - David
>
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