diff --git a/libcxx/.clang-format b/libcxx/.clang-format
deleted file mode 100644
--- a/libcxx/.clang-format
+++ /dev/null
@@ -1,88 +0,0 @@
-BasedOnStyle: LLVM
-
-AlignAfterOpenBracket: Align
-AlignConsecutiveAssignments: Consecutive
-AlignConsecutiveBitFields: Consecutive
-AlignEscapedNewlines: Right
-AlignOperands: AlignAfterOperator
-AlignTrailingComments: true
-AllowAllArgumentsOnNextLine: true
-AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortFunctionsOnASingleLine: true
-AllowShortLambdasOnASingleLine: All
-AttributeMacros: ['_LIBCPP_HIDE_FROM_ABI',
-                  '_LIBCPP_CONSTEXPR',
-                  '_LIBCPP_CONSTEXPR_SINCE_CXX14',
-                  '_LIBCPP_CONSTEXPR_SINCE_CXX17',
-                  '_LIBCPP_CONSTEXPR_SINCE_CXX20',
-                  '_LIBCPP_CONSTEXPR_SINCE_CXX23',
-                  '_LIBCPP_ALIGNOF',
-                  '_ALIGNAS_TYPE',
-                  '_ALIGNAS',
-                  '_LIBCPP_NORETURN',
-                  '_LIBCPP_ALWAYS_INLINE',
-                  '_LIBCPP_DISABLE_EXTENTSION_WARNING',
-                  '_LIBCPP_HIDDEN',
-                  '_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS',
-                  '_LIBCPP_FUNC_VIS',
-                  '_LIBCPP_TYPE_VIS',
-                  '_LIBCPP_TEMPLATE_VIS',
-                  '_LIBCPP_TEMPLATE_DATA_VIS',
-                  '_LIBCPP_EXPORTED_FROM_ABI',
-                  '_LIBCPP_OVERRIDABLE_FUNC_VIS',
-                  '_LIBCPP_EXCEPTION_ABI',
-                  '_LIBCPP_ENUM_VIS',
-                  '_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS',
-                  '_LIBCPP_INTERNAL_LINKAGE',
-                  '_LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION',
-                  '_LIBCPP_HIDE_FROM_ABI_AFTER_V1',
-                  '_LIBCPP_INLINE_VISIBILITY',
-                  '_LIBCPP_CONSTEVAL',
-                  '_LIBCPP_NOALIAS',
-                  '_LIBCPP_USING_IF_EXISTS',
-                  '_LIBCPP_DEPRECATED',
-                  '_LIBCPP_DEPRECATED_IN_CXX11',
-                  '_LIBCPP_DEPRECATED_IN_CXX14',
-                  '_LIBCPP_DEPRECATED_IN_CXX17',
-                  '_LIBCPP_DEPRECATED_IN_CXX20',
-                  '_LIBCPP_NODISCARD',
-                  '_LIBCPP_NODISCARD_EXT',
-                  '_LIBCPP_NO_DESTROY',
-                  '_LIBCPP_WEAK',
-                  '_LIBCPP_CONSTINIT',
-                  '_LIBCPP_FALLTHROUGH',
-                  '_LIBCPP_STANDALONE_DEBUG',
-                  '_LIBCPP_NO_UNIQUE_ADDRESS',
-                 ]
-BinPackArguments: false
-BinPackParameters: false
-BreakBeforeConceptDeclarations: true
-BreakInheritanceList: BeforeColon
-EmptyLineAfterAccessModifier: Never
-EmptyLineBeforeAccessModifier: Always
-IndentWrappedFunctionNames: false
-IndentRequires: true
-InsertTrailingCommas: Wrapped
-KeepEmptyLinesAtTheStartOfBlocks: false
-MaxEmptyLinesToKeep: 1
-PackConstructorInitializers: NextLine
-
-PenaltyIndentedWhitespace: 2
-
-Language: Cpp
-Standard: c++20
-SpacesInAngles: Leave
-
-AlwaysBreakTemplateDeclarations: true
-PointerAlignment: Left
-
-
-# Disable formatting options which may break tests.
-SortIncludes: false
-ReflowComments: false
-
-# libc++'s preferred indentions of preprocessor statements.
-IndentPPDirectives: AfterHash
-
-# libc++ has some long names so we need more than the 80 column limit imposed by LLVM style, for sensible formatting
-ColumnLimit: 120
diff --git a/libcxx/test/libcxx/strings/basic.string/string.capacity/max_size.pass.cpp b/libcxx/test/libcxx/strings/basic.string/string.capacity/max_size.pass.cpp
--- a/libcxx/test/libcxx/strings/basic.string/string.capacity/max_size.pass.cpp
+++ b/libcxx/test/libcxx/strings/basic.string/string.capacity/max_size.pass.cpp
@@ -84,6 +84,8 @@
 #   endif
 # elif defined(__sparc64__)
   half_size();
+#elif defined(__loongarch__)
+  full_size();
 # elif defined(_WIN32)
   full_size();
 # else