From eb6b5eb2666475372e945af4552918f3fd993148 Mon Sep 17 00:00:00 2001
From: Cheng-Shiun Tsai <cheng.tsai@samsung.com>
Date: Mon, 19 Oct 2020 15:29:49 +0100
Subject: [PATCH] Error message when demo lib doesn't have main()

---
 build/android/app/src/main/cpp/main.cpp | 7 +++++++
 1 file changed, 7 insertions(+), 0 deletions(-)

diff --git a/build/android/app/src/main/cpp/main.cpp b/build/android/app/src/main/cpp/main.cpp
index d02bb12..7b1d624 100644
--- a/build/android/app/src/main/cpp/main.cpp
+++ b/build/android/app/src/main/cpp/main.cpp
@@ -217,10 +217,17 @@ void android_main(struct android_app* state)
   dlerror(); /* Clear any existing error */
 
   int (*main)(int, char**) = (int (*)(int, char**))dlsym(handle, "main");
+  LOGV("lib=%s handle=%p main=%p", libpath.c_str(), handle, main );
   if(main)
   {
     status = main(0, nullptr);
   }
+  else
+  {
+      LOGE("lib %s doesn't have main()", libpath.c_str());
+      status = EFAULT;
+      std::exit(status);
+  }
 
   if(handle)
   {
--
libgit2 0.21.4