[libcxx-commits] [libcxx] [libc++][filesystem] Applied `[[nodiscard]]` (PR #171085)

[A. Jiang via libcxx-commits]

================
@@ -34,31 +34,31 @@ enum class copy_options : unsigned short {
   __in_recursive_copy = 512,
 };
 
-_LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator&(copy_options __lhs, copy_options __rhs) {
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator&(copy_options __lhs, copy_options __rhs) {
   return static_cast<copy_options>(static_cast<unsigned short>(__lhs) & static_cast<unsigned short>(__rhs));
 }
 
-_LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator|(copy_options __lhs, copy_options __rhs) {
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator|(copy_options __lhs, copy_options __rhs) {
   return static_cast<copy_options>(static_cast<unsigned short>(__lhs) | static_cast<unsigned short>(__rhs));
 }
 
-_LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator^(copy_options __lhs, copy_options __rhs) {
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator^(copy_options __lhs, copy_options __rhs) {
   return static_cast<copy_options>(static_cast<unsigned short>(__lhs) ^ static_cast<unsigned short>(__rhs));
 }
 
-_LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator~(copy_options __lhs) {
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline constexpr copy_options operator~(copy_options __lhs) {
   return static_cast<copy_options>(~static_cast<unsigned short>(__lhs));
 }
 
-_LIBCPP_HIDE_FROM_ABI inline copy_options& operator&=(copy_options& __lhs, copy_options __rhs) {
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline copy_options& operator&=(copy_options& __lhs, copy_options __rhs) {
   return __lhs = __lhs & __rhs;
 }
 
-_LIBCPP_HIDE_FROM_ABI inline copy_options& operator|=(copy_options& __lhs, copy_options __rhs) {
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline copy_options& operator|=(copy_options& __lhs, copy_options __rhs) {
   return __lhs = __lhs | __rhs;
 }
 
-_LIBCPP_HIDE_FROM_ABI inline copy_options& operator^=(copy_options& __lhs, copy_options __rhs) {
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline copy_options& operator^=(copy_options& __lhs, copy_options __rhs) {
   return __lhs = __lhs ^ __rhs;
 }
----------------
frederick-vs-ja wrote:

Addressed in #172275.

https://github.com/llvm/llvm-project/pull/171085