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From: "koncek.marian at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/98857] New: Add support for function attributes applied to
 function pointers from non-capturing lambdas
Date: Wed, 27 Jan 2021 14:35:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98857

            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=3D50070&action=3Dedit
example

Since non-capturing lambda has to be convertible to a function pointer it m=
ay
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.=