From cc27d851101b962518fac1dfbe0fc82dd893866c Mon Sep 17 00:00:00 2001
From: Uladzislau Paulovich <ulad@fb.com>
Date: Mon, 1 Jul 2019 08:47:58 -0700
Subject: [PATCH] Remove incorrect constexpr specifier in YGLayout (#25430)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/25430

Pull Request resolved: https://github.com/facebook/litho/pull/561

Pull Request resolved: https://github.com/facebook/yoga/pull/910

* According to C++ standard values which produce undefined behavior cannot be declared as `constexpr`.
* Expressions which evaluate to `nan, infinity, etc` are undefined behavior.

For more details you can checkout this Stackoverflow answer: https://stackoverflow.com/a/46373136

Reviewed By: davidaurelio

Differential Revision: D16055108

fbshipit-source-id: ee85ba63a714b18bfb8aa8c0770652e184454f74
---
 yoga/YGLayout.h | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/yoga/YGLayout.h b/yoga/YGLayout.h
index 1b30cc8c..74082a76 100644
--- a/yoga/YGLayout.h
+++ b/yoga/YGLayout.h
@@ -8,12 +8,9 @@
 #include "YGFloatOptional.h"
 #include "Yoga-internal.h"
 
-constexpr std::array<float, 2> kYGDefaultDimensionValues = {
-    {YGUndefined, YGUndefined}};
-
 struct YGLayout {
   std::array<float, 4> position = {};
-  std::array<float, 2> dimensions = kYGDefaultDimensionValues;
+  std::array<float, 2> dimensions = {{YGUndefined, YGUndefined}};
   std::array<float, 4> margin = {};
   std::array<float, 4> border = {};
   std::array<float, 4> padding = {};
@@ -33,7 +30,7 @@ struct YGLayout {
   uint32_t nextCachedMeasurementsIndex = 0;
   std::array<YGCachedMeasurement, YG_MAX_CACHED_RESULT_COUNT>
       cachedMeasurements = {};
-  std::array<float, 2> measuredDimensions = kYGDefaultDimensionValues;
+  std::array<float, 2> measuredDimensions = {{YGUndefined, YGUndefined}};
 
   YGCachedMeasurement cachedLayout = YGCachedMeasurement();