- backport from 11.3.1-2: fix bogus -Wuninitialized warning on va_arg with complex types on x86_64 (PR target/105331)
- backport from 11.3.1-2: remove bogus assertion in std::from_chars (PR libstdc++/105324)
- backport from 11.2.1-10: update from releases/gcc-11-branch (#2063255)
- backport from 11.2.1-10: fix x86 vector initialization expansion fallback
- backport from 11.2.1-10: drop patch 22 (gcc11-libsanitizer-pthread.patch; upstreamed as r11-9607-ga8dd74bfb921ed)