[libcxx-commits] [libcxx] [libc++] Assert the element and range preconditions of list::splice and forward_list::splice_after (PR #232538)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions ,cpp -- libcxx/test/libcxx/containers/sequences/forwardlist/assert.splice_after.pass.cpp libcxx/test/libcxx/containers/sequences/list/list.ops/assert.splice.pos_list.pass.cpp libcxx/test/libcxx/containers/sequences/list/list.ops/assert.splice.pos_list_iter.pass.cpp libcxx/test/libcxx/containers/sequences/list/list.ops/assert.splice.pos_list_iter_iter.pass.cpp libcxx/include/forward_list libcxx/include/list libcxx/test/libcxx/containers/sequences/forwardlist/assert.pass.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/libcxx/include/forward_list b/libcxx/include/forward_list
index b30002743..11175afe8 100644
--- a/libcxx/include/forward_list
+++ b/libcxx/include/forward_list
@@ -1282,7 +1282,8 @@ _LIBCPP_CONSTEXPR_SINCE_CXX26 void forward_list<_Tp, _Alloc>::resize(size_type _
 template <class _Tp, class _Alloc>
 _LIBCPP_CONSTEXPR_SINCE_CXX26 void forward_list<_Tp, _Alloc>::splice_after(const_iterator __p, forward_list& __x) {
   _LIBCPP_ASSERT_VALID_INPUT_RANGE(
-      this != std::addressof(__x), "forward_list::splice_after(iterator, forward_list) called with this == &forward_list");
+      this != std::addressof(__x),
+      "forward_list::splice_after(iterator, forward_list) called with this == &forward_list");
   if (!__x.empty()) {
     if (__p.__ptr_->__next_ != nullptr) {
       const_iterator __lm1 = __x.before_begin();

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https://github.com/llvm/llvm-project/pull/232538