https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88656
--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- (In reply to gerd from comment #4) > (In reply to Richard Earnshaw from comment #3) > > A regression is not a bug that applies in all previous releases. A > > regression is where something worked in some previous releases but does not > > work now. > > using __builtin_return_address(0) as described in the bug report worked in > gcc 5.4.0 and before. To be more specific, it worked before the fix for bug > 77933 was incorporated. So to me this is a regression. then please update the known-to-work field accordingly.