diff options
| -rw-r--r-- | libstdc++-v3/include/std/bitset | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libstdc++-v3/include/std/bitset b/libstdc++-v3/include/std/bitset index 3243c64..16c4040 100644 --- a/libstdc++-v3/include/std/bitset +++ b/libstdc++-v3/include/std/bitset @@ -177,8 +177,15 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER _GLIBCXX14_CONSTEXPR void _M_do_set() _GLIBCXX_NOEXCEPT { - for (size_t __i = 0; __i < _Nw; __i++) - _M_w[__i] = ~static_cast<_WordT>(0); +#if __cplusplus >= 201402L + if (__builtin_is_constant_evaluated()) + { + for (_WordT& __w : _M_w) + __w = ~static_cast<_WordT>(0);; + return; + } +#endif + __builtin_memset(_M_w, 0xFF, _Nw * sizeof(_WordT)); } _GLIBCXX14_CONSTEXPR void |