https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99277
--- Comment #6 from Thiago Macieira <thiago at kde dot org> --- We don't have to delay the release. Either of these two patches give us one more year to get it right: --- libstdc++-v3/include/bits/atomic_wait.h +++ libstdc++-v3/include/bits/atomic_wait.h @@ -32,9 +32,9 @@ #pragma GCC system_header #include <bits/c++config.h> -#if defined _GLIBCXX_HAS_GTHREADS || defined _GLIBCXX_HAVE_LINUX_FUTEX +#if defined _GLIBCXX_ENABLE_EXPERIMENTAL_ATOMIC_WAIT && (defined _GLIBCXX_HAS_GTHREADS || defined _GLIBCXX_HAVE_LINUX_FUTEX) #include <bits/functional_hash.h> #include <bits/gthr.h> #include <ext/numeric_traits.h> Or --- libstdc++-v3/include/bits/atomic_base.h +++ libstdc++-v3/include/bits/atomic_base.h @@ -36,9 +36,9 @@ #include <stdint.h> #include <bits/atomic_lockfree_defines.h> #include <bits/move.h> -#if __cplusplus > 201703L +#if __cplusplus > 201703L && defined _GLIBCXX_ENABLE_EXPERIMENTAL_ATOMIC_WAIT #include <bits/atomic_wait.h> #endif #ifndef _GLIBCXX_ALWAYS_INLINE
