[Bug preprocessor/103355] New: libcpp/lex.c:1289:9: warning: use of the 'likely' attribute is a C++20 extension [-Wc++20-extensions]

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103355

            Bug ID: 103355
           Summary: libcpp/lex.c:1289:9: warning: use of the 'likely'
                    attribute is a C++20 extension [-Wc++20-extensions]
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: mpolacek at gcc dot gnu.org
  Target Milestone: ---

Right now, we require for building of GCC ISO C++11 compiler. However,
[[likely]] and [[unlikely]] come from C++20, or?