[libcxx-commits] [libcxx] [libc++][vector] Apply `[[nodiscard]]` to `vector<bool>::iterator` (PR #202265)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions ,cpp -- libcxx/test/libcxx/containers/sequences/vector.bool/nodiscard.iterator.verify.cpp libcxx/include/__bit_reference --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/libcxx/include/__bit_reference b/libcxx/include/__bit_reference
index 3b3ff67de..692686f15 100644
--- a/libcxx/include/__bit_reference
+++ b/libcxx/include/__bit_reference
@@ -389,13 +389,15 @@ public:
     return *this += -__n;
   }
 
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator+(difference_type __n) const {
+  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator
+  operator+(difference_type __n) const {
     __bit_iterator __t(*this);
     __t += __n;
     return __t;
   }
 
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator-(difference_type __n) const {
+  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator
+  operator-(difference_type __n) const {
     __bit_iterator __t(*this);
     __t -= __n;
     return __t;
@@ -411,7 +413,8 @@ public:
     return (__x.__seg_ - __y.__seg_) * __bits_per_word + __x.__ctz_ - __y.__ctz_;
   }
 
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](difference_type __n) const {
+  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference
+  operator[](difference_type __n) const {
     return *(*this + __n);
   }
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/202265