[Bug c++/125889] New: [reflection] members_of on a closure is empty

[gcc at hazardy dot de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125889

            Bug ID: 125889
           Summary: [reflection] members_of on a closure is empty
           Product: gcc
           Version: 16.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gcc at hazardy dot de
  Target Milestone: ---

As far as I understood I should be able to get the call operator of a closure
type, but members_of is empty.

#include <meta>

using L = decltype([]{});

static_assert(std::meta::members_of(^^L,
std::meta::access_context::unchecked()).size() > 0);

fails with:

error: static assertion failed
static_assert(std::meta::members_of(^^L,
std::meta::access_context::unchecked()).size() > 0);
  • the comparison reduces to '(0 > 0)'