From d292b1fda487f80273ba1f0e5a19c4130cf85f08 Mon Sep 17 00:00:00 2001
From: dholmes <unknown>
Date: Tue, 8 Oct 2013 02:56:06 -0400
Subject: [PATCH] 8026025: JVM_GetCallerClass allows
 Reflection.getCallerClass(int depth) to use Reviewed-by: alanb, dholmes,
 twisti Contributed-by: mandy.chung@oracle.com

---
 src/share/vm/prims/jvm.cpp | 9 ++++-----
 src/share/vm/prims/jvm.h   | 3 +++
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/share/vm/prims/jvm.cpp b/src/share/vm/prims/jvm.cpp
index 23635a3d2..a757e1948 100644
--- a/src/share/vm/prims/jvm.cpp
+++ b/src/share/vm/prims/jvm.cpp
@@ -668,13 +668,12 @@ JVM_END
 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth))
   JVMWrapper("JVM_GetCallerClass");
 
-  // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation.
-  if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) {
+  // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or
+  // sun.reflect.Reflection.getCallerClass with a depth parameter is provided
+  // temporarily for existing code to use until a replacement API is defined.
+  if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) {
     Klass* k = thread->security_get_caller_class(depth);
     return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror());
-  } else {
-    // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass
-    assert(depth == -1, "wrong handshake depth");
   }
 
   // Getting the class of the caller frame.
diff --git a/src/share/vm/prims/jvm.h b/src/share/vm/prims/jvm.h
index 6248f4d79..ef57a9d2b 100644
--- a/src/share/vm/prims/jvm.h
+++ b/src/share/vm/prims/jvm.h
@@ -374,6 +374,9 @@ JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim);
 /*
  * java.lang.Class and java.lang.ClassLoader
  */
+
+#define JVM_CALLER_DEPTH -1
+
 /*
  * Returns the class in which the code invoking the native method
  * belongs.
-- 
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