[libcxx-commits] [libcxx] [libc++] Fix constexpr initialization of std::array<T, 0> (PR #74667)

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``````````bash
git-clang-format --diff 71be8f3c23497e28c86f1135f564b16106d8d6fb 1f37bb695a7ccc293d4793ff560cd45425c70960 -- libcxx/test/std/containers/sequences/array/size_and_alignment.compile.pass.cpp libcxx/include/array libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp b/libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp
index bdc79e2201..ba7bea2cdc 100644
--- a/libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp
+++ b/libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp
@@ -20,16 +20,20 @@ struct NoDefault {
 
 // Test default initialization
 struct test_default_initialization {
-    template <typename T>
-    TEST_CONSTEXPR_CXX14 void operator()() const
-    {
-        std::array<T, 0> a0; (void)a0;
-        std::array<T, 1> a1; (void)a1;
-        std::array<T, 2> a2; (void)a2;
-        std::array<T, 3> a3; (void)a3;
-
-        std::array<NoDefault, 0> nodefault; (void)nodefault;
-    }
+  template <typename T>
+  TEST_CONSTEXPR_CXX14 void operator()() const {
+    std::array<T, 0> a0;
+    (void)a0;
+    std::array<T, 1> a1;
+    (void)a1;
+    std::array<T, 2> a2;
+    (void)a2;
+    std::array<T, 3> a3;
+    (void)a3;
+
+    std::array<NoDefault, 0> nodefault;
+    (void)nodefault;
+  }
 };
 
 // Additional tests for constexpr default initialization of empty arrays since
@@ -38,12 +42,13 @@ struct test_default_initialization {
 //
 // Reproducer for https://github.com/llvm/llvm-project/issues/74375
 struct test_default_initialization_74375 {
-    template <typename T>
-    TEST_CONSTEXPR_CXX14 void operator()() const
-    {
-        constexpr std::array<T, 0> a0; (void)a0;
-        constexpr std::array<NoDefault, 0> nodefault; (void)nodefault;
-    }
+  template <typename T>
+  TEST_CONSTEXPR_CXX14 void operator()() const {
+    constexpr std::array<T, 0> a0;
+    (void)a0;
+    constexpr std::array<NoDefault, 0> nodefault;
+    (void)nodefault;
+  }
 };
 
 struct test_nondefault_initialization {
@@ -194,9 +199,9 @@ int main(int, char**)
     test_initializer_list();
 #if TEST_STD_VER >= 14
     static_assert(with_all_types<test_nondefault_initialization>(), "");
-#if TEST_STD_VER >= 20
+#  if TEST_STD_VER >= 20
     static_assert(with_all_types<test_default_initialization>(), "");
-#endif
+#  endif
     static_assert(with_all_types<test_default_initialization_74375>(), "");
     static_assert(test_initializer_list(), "");
 #endif

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https://github.com/llvm/llvm-project/pull/74667