[Bug c++/120123] [12/13/14/15/16 Regression] Implicit this is not used in a requires clause in nested lambdas

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120123

--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jason Merrill
<ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:8bdbd3b73464f7b12b7d31af91660381be2b5e17

commit r12-11123-g8bdbd3b73464f7b12b7d31af91660381be2b5e17
Author: Jason Merrill <ja...@redhat.com>
Date:   Fri May 30 18:27:45 2025 -0400

    c++: lambda this capture and requires [PR120123]

    We shouldn't need to be within the lambda body to look through it to the
    enclosing non-static member function.

    This change is a small subset of r16-970.

            PR c++/120123

    gcc/cp/ChangeLog:

            * lambda.cc (nonlambda_method_basetype): Look through lambdas
            even when current_class_ref is null.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp2a/concepts-lambda24.C: New test.