Improve detail message for X509TrustManagerExtensions argument validation

Bug: 13728564
Change-Id: I03d08babcdc0d11baff5e76a339b4285e92edee8

1 files changed, 2 insertions, 1 deletions

diff --git a/core/java/android/net/http/X509TrustManagerExtensions.java b/core/java/android/net/http/X509TrustManagerExtensions.java
index 666832aea9a6..d730a7ba0558 100644
--- a/core/java/android/net/http/X509TrustManagerExtensions.java
+++ b/core/java/android/net/http/X509TrustManagerExtensions.java
@@ -56,7 +56,8 @@ public class X509TrustManagerExtensions {
         if (tm instanceof TrustManagerImpl) {
             mDelegate = (TrustManagerImpl) tm;
         } else {
-            throw new IllegalArgumentException("tm is not a supported type of X509TrustManager");
+            throw new IllegalArgumentException("tm is an instance of " + tm.getClass().getName() +
+                    " which is not a supported type of X509TrustManager");
         }
     }