[Bug c++/98857] New: Add support for function attributes applied to function pointers from non-capturing lambdas

[Bug c++/98857] New: Add support for function attributes applied to function pointers from non-capturing lambdas

[koncek.marian at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98857

            Bug ID: 98857
           Summary: Add support for function attributes applied to
                    function pointers from non-capturing lambdas
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: koncek.marian at gmail dot com
  Target Milestone: ---

Created attachment 50070
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50070&action=edit
example

Since non-capturing lambda has to be convertible to a function pointer it may
be useful to be able to specify function attributes (such as
[[gnu::aligned(N)]]) which apply to the function pointer obtained from such
lambda.

Example use: https://godbolt.org/z/ds1G6z
(also attached)

Although this opens some questions about which attribute applies to any of the:
1) lambda object
2) member application function: &decltype(lambda)::operator()
3) function pointer from non-capturing lambdas

and where to place the attribute specifier.