https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85889
--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>: https://gcc.gnu.org/g:46bafd9a6b9b776142e0b1424a6ac02e3a2fd300 commit r15-348-g46bafd9a6b9b776142e0b1424a6ac02e3a2fd300 Author: Marek Polacek <pola...@redhat.com> Date: Fri Mar 1 17:13:02 2024 -0500 c++: lambda capturing structured bindings [PR85889] <https://wg21.link/p1381r1> clarifies that it's OK to capture structured bindings. [expr.prim.lambda.capture]/4 says "The identifier in a simple-capture shall denote a local entity" and [basic.pre]/3: "An entity is a [...] structured binding". It doesn't appear that this was made a DR, so, strictly speaking, we should have a -Wc++20-extensions warning, like clang++. PR c++/85889 gcc/cp/ChangeLog: * lambda.cc (add_capture): Add a pedwarn for capturing structured bindings. gcc/testsuite/ChangeLog: * g++.dg/cpp2a/decomp3.C: Use -Wno-c++20-extensions. * g++.dg/cpp1z/decomp60.C: New test.