https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109114
Bug ID: 109114 Summary: lambdas should be non-pod for ABI Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: dblaikie at gmail dot com Target Milestone: --- See original bug filed against clang: https://github.com/llvm/llvm-project/issues/59078 itanium-cxx-abi bug: https://github.com/itanium-cxx-abi/cxx-abi/issues/156 (inverted, so it fails with GCC and passes with Clang) example from the clang bug: https://godbolt.org/z/45TxsPehe ``` template <typename ...T> struct Callables : T ... { Callables(T ...t) : T(t) ... {} using T::operator() ...; }; inline auto f(int x, char y) { Callables callables([x, y](void) {}, [y](int) {}); static_assert(sizeof(callables) == 8); return callables; } int main(void) { f(0, 1)(42); } ``` Maybe still an open question about lambdas that don't capture - since they do have a default ctor, but the spec still says they're non-aggregate.