Fix ARM64 layout issues

change/react-native-windows-d0b46459-5370-47eb-9a2c-9c46738403cb.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Change the definition of YGUndefined from NAN to __builtin_nanf(\"0\")",
+  "packageName": "react-native-windows",
+  "email": "[email protected]",
+  "dependentChangeType": "patch"
+}

vnext/ReactCommon/TEMP_UntilReactCommonUpdate/yoga/yoga/YGValue.h

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <math.h>
+#include "YGEnums.h"
+#include "YGMacros.h"
+
+#if defined(_MSC_VER) && defined(__clang__)
+#define COMPILING_WITH_CLANG_ON_WINDOWS
+#endif
+#if defined(COMPILING_WITH_CLANG_ON_WINDOWS)
+#include <limits>
+constexpr float YGUndefined = std::numeric_limits<float>::quiet_NaN();
+#else
+YG_EXTERN_C_BEGIN
+
+#if defined(_MSC_VER)
+#define YGUndefined __builtin_nanf("0")
+#else
+#define YGUndefined NAN
+#endif
+
+#endif
+
+typedef struct YGValue {
+  float value;
+  YGUnit unit;
+} YGValue;
+
+YOGA_EXPORT extern const YGValue YGValueAuto;
+YOGA_EXPORT extern const YGValue YGValueUndefined;
+YOGA_EXPORT extern const YGValue YGValueZero;
+
+#if !defined(COMPILING_WITH_CLANG_ON_WINDOWS)
+YG_EXTERN_C_END
+#endif
+#undef COMPILING_WITH_CLANG_ON_WINDOWS
+
+#ifdef __cplusplus
+
+inline bool operator==(const YGValue& lhs, const YGValue& rhs) {
+  if (lhs.unit != rhs.unit) {
+    return false;
+  }
+
+  switch (lhs.unit) {
+    case YGUnitUndefined:
+    case YGUnitAuto:
+      return true;
+    case YGUnitPoint:
+    case YGUnitPercent:
+      return lhs.value == rhs.value;
+  }
+
+  return false;
+}
+
+inline bool operator!=(const YGValue& lhs, const YGValue& rhs) {
+  return !(lhs == rhs);
+}
+
+inline YGValue operator-(const YGValue& value) {
+  return {-value.value, value.unit};
+}
+
+namespace facebook {
+namespace yoga {
+namespace literals {
+
+inline YGValue operator"" _pt(long double value) {
+  return YGValue{static_cast<float>(value), YGUnitPoint};
+}
+inline YGValue operator"" _pt(unsigned long long value) {
+  return operator"" _pt(static_cast<long double>(value));
+}
+
+inline YGValue operator"" _percent(long double value) {
+  return YGValue{static_cast<float>(value), YGUnitPercent};
+}
+inline YGValue operator"" _percent(unsigned long long value) {
+  return operator"" _percent(static_cast<long double>(value));
+}
+
+} // namespace literals
+} // namespace yoga
+} // namespace facebook
+
+#endif

vnext/overrides.json

@@ -74,6 +74,12 @@
       "baseHash": "95a6fd14e80719f9796942ffe59dd850a56d544c",
       "issue": 9791
     },
+    {
+      "type": "patch",
+      "file": "ReactCommon/TEMP_UntilReactCommonUpdate/yoga/yoga/YGValue.h",
+      "baseFile": "ReactCommon/yoga/yoga/YGValue.h",
+      "baseHash": "0b6b49a41787b7f5caee1792af488c66d33db3d8"
+    },
     {
       "type": "patch",
       "file": "ReactCommon/Yoga.cpp",
@@ -514,4 +520,4 @@
       "file": "src/typings-index.ts"
     }
   ]
-}
+}