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Re: [PATCH] fix constrained auto parsing issue

On 10/21/19 4:40 PM, Andrew Sutton wrote:

In cp_parser_simple_type_specifier:

if (!type && flag_concepts && decl_specs)
{
   /* Try for a type-constraint with template arguments.  We check
      decl_specs here to avoid trying this for a functional cast.  */
      ...

It's subtle.
Aha. Please reference cp_parser_simple_type_specifier in the newly extended comment, then; OK with that change. 


On Mon, Oct 21, 2019 at 2:22 PM Jason Merrill <jason@redhat.com> wrote:


On 10/17/19 10:36 AM, Andrew Sutton wrote:

This fixes a parsing bug with constrained placeholders uses as the
first parameter of a constructor.



+          Parse with an empty set of declaration specifiers since we're
+          trying to match a type-specifier of the first parameter.  */


Why does that make a difference?

Jason
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