https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97362
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:18e4119b23175e2de2fecdaae052c5a8729d9f56 commit r9-9361-g18e4119b23175e2de2fecdaae052c5a8729d9f56 Author: Jonathan Wakely <jwak...@redhat.com> Date: Sat Oct 10 21:22:12 2020 +0100 libstdc++: Replace use of reserved name that clashes [PR 97362] The name __deref is defined as a macro by Windows headers. This renames the __deref() helper function to __ref. It doesn't actually dereference an iterator. it just has the same type as the iterator's reference type. libstdc++-v3/ChangeLog: PR libstdc++/97362 * doc/html/manual/source_code_style.html: Regenerate. * doc/xml/manual/appendix_contributing.xml: Add __deref to BADNAMES. * include/debug/functions.h (_Irreflexive_checker::__deref): Rename to __ref. (cherry picked from commit 2137aa92412da363d52ef699987441be28b239d0)