Re: [PR c++/86610] lambda captures in templates

["H.J. Lu" <hjl.tools@gmail.com>]

On Wed, Jan 16, 2019 at 2:32 PM Jason Merrill <jason@redhat.com> wrote:
>
> On 1/16/19 4:48 PM, Nathan Sidwell wrote:
> > This PR reports a bug where we select a non-const operator function and
> > then apply it to a const object.  That's happening because the
> > expression 'c[0]' is not dependent, so we figure end up resolving it.
> > But the lambda capture logic doesn't capture 'c' at that point and we
> > have a non-const qualified 'c'.  At instantiation time we do the capture
> > and the by-value lambda results in const-qualified captures.
> >
> > Jason, the orginal test in process_outer_var_ref looked a little funky
> > -- why not just processing_template_decl? That would satisfy what the
> > comment says it checking.  Anyway changing the test to check DECL's
> > type-dependency makes the right things happen, and a bootstrap passes.
> > Could you review please.
>
> Hmm, I don't remember exactly my rationale for deferring captures within
> a template, but if this doesn't obviously break anything it seems
> reasonable.  Go ahead.
>

This caused:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88995

We are working on a smaller testcase.

-- 
H.J.