https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105743
Bug ID: 105743 Summary: Bogus unused but set lambda warning Product: gcc Version: 13.0 Status: UNCONFIRMED Keywords: diagnostic Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: johelegp at gmail dot com CC: johelegp at gmail dot com Target Milestone: --- See https://godbolt.org/z/xq16xac15. ```C++ void f(auto x) { x(0); } void g() { static constexpr auto h = [](...) { }; f([](auto x) { h(x); }); } ``` ``` <source>: In function 'void g()': <source>:3:25: warning: variable 'h' set but not used [-Wunused-but-set-variable] 3 | static constexpr auto h = [](...) { }; | ^ ``` Arguably, `h(x)` could perform ADL on `x`. But perhaps it'd be better to stay silent, like the other compilers.