[Bug c++/115605] structured binding break if a variable named tuple_size is visibile at the decomposition site

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115605

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
           Keywords|                            |rejects-valid
   Last reconfirmed|                            |2024-06-24

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Note tuple_element has the same issue.



The code seems like what I would have expected it to do:
  tree inst = lookup_template_class (tuple_size_identifier, args,
                                     /*in_decl*/NULL_TREE,
                                     /*context*/std_node,
                                     tf_none);


  tree inst = lookup_template_class (tuple_element_identifier, args,
                                     /*in_decl*/NULL_TREE,
                                     /*context*/std_node,
                                     tf_warning_or_error);


You might end up with the same issue with coroutine_handle too.

  tree handle_type
    = lookup_template_class (coro_handle_identifier, targ,
                             /* in_decl=*/NULL_TREE,
                             /* context=*/std_node,
                             tf_warning_or_error);

Though that might happen outside a function context.