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-rw-r--r--Firestore/core/src/firebase/firestore/geo_point.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/Firestore/core/src/firebase/firestore/geo_point.cc b/Firestore/core/src/firebase/firestore/geo_point.cc
index 2f35390..1ed5126 100644
--- a/Firestore/core/src/firebase/firestore/geo_point.cc
+++ b/Firestore/core/src/firebase/firestore/geo_point.cc
@@ -20,6 +20,8 @@
#include "Firestore/core/src/firebase/firestore/util/firebase_assert.h"
+using std::isnan;
+
namespace firebase {
namespace firestore {