commit 8cf3e9ffbd3a5e51f86d68754cc020d5e6d9f676
author Steven Moreland <smoreland@google.com> Sat Nov 05 01:02:27 2022 +0000
committer Steven Moreland <smoreland@google.com> Thu Dec 29 01:58:33 2022 +0000
tree dd71baff8614b76576d6943c07be2f36bc3da8e0
parent 01f93a9ef103e446dd7c90229cfc0c7af54cb855

cpp binder: error if no toString implemented

Now that they are all implemented.

Bug: 259162245
Test: N/A
Change-Id: Ibe63610f480a867641716e91ac85268a069361e5

libs/binder/ndk/include_cpp/android/binder_to_string.h

diff --git a/libs/binder/ndk/include_cpp/android/binder_to_string.h b/libs/binder/ndk/include_cpp/android/binder_to_string.h
index 27fdcdb..e3ead11 100644
--- a/libs/binder/ndk/include_cpp/android/binder_to_string.h
+++ b/libs/binder/ndk/include_cpp/android/binder_to_string.h
@@ -166,6 +166,11 @@
     enum { value = decltype(_test<_T>(0))::value };
 };
 
+template <typename _T>
+struct TypeDependentFalse {
+    enum { value = false };
+};
+
 }  // namespace details
 
 template <typename _T>
@@ -225,7 +230,7 @@
         out << "]";
         return out.str();
     } else {
-        return "{no toString() implemented}";
+        static_assert(details::TypeDependentFalse<_T>::value, "no toString implemented, huh?");
     }
 }