From 60bb3f49c92d75306acd75a42fe500b3a9da5ed2 Mon Sep 17 00:00:00 2001
From: Brad Davis <bdavis@saintandreas.org>
Date: Mon, 15 Jan 2018 11:54:21 -0800
Subject: [PATCH] Fix crash on 0 size assets

---
 android/app/src/main/cpp/native.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/android/app/src/main/cpp/native.cpp b/android/app/src/main/cpp/native.cpp
index c6e3ee2070..13daf4c471 100644
--- a/android/app/src/main/cpp/native.cpp
+++ b/android/app/src/main/cpp/native.cpp
@@ -79,11 +79,13 @@ void copyAsset(const char* sourceAsset, const QString& destFilename) {
         if (!file.resize(size)) {
             throw std::runtime_error("Unable to resize output file");
         }
-        auto mapped = file.map(0, size);
-        if (!mapped) {
-            throw std::runtime_error("Unable to map output file");
+        if (size != 0) {
+            auto mapped = file.map(0, size);
+            if (!mapped) {
+                throw std::runtime_error("Unable to map output file");
+            }
+            memcpy(mapped, data, size);
         }
-        memcpy(mapped, data, size);
         file.close();
     });
 }