src/java.base/share/classes/java/lang/Throwable.java

rev 50866 : 8203826: Chain exception from initialization in later NoClassDefFoundErrors.

*** 831,840 ****
--- 831,864 ----
          }
          return stackTrace;
      }
  
      /**
+      * This method is currently only called from the VM for instances of
+      * ExceptionInInitializerError which are stored for later chaining into a
+      * NoClassDefFoundError in order to prevent keeping classes from the native
+      * backtrace alive.
+      */
+     private static void removeNativeBacktrace(Throwable throwable) {
+         Throwable t = throwable;
+         while ((t != null)) {
+             // Triggers the generation of the stack trace elements.
+             t.getOurStackTrace();
+             if (t.suppressedExceptions != null) {
+                 // If there are any suppressed exceptions,
+                 // remove their native backtraces as well.
+                 for (Throwable s : t.suppressedExceptions) {
+                     removeNativeBacktrace(s);
+                 }
+             }
+             // Now we don't need the native backtrace any more
+             t.backtrace = null;
+             t = t.getCause();
+         }
+     }
+ 
+     /**
       * Sets the stack trace elements that will be returned by
       * {@link #getStackTrace()} and printed by {@link #printStackTrace()}
       * and related methods.
       *
       * This method, which is designed for use by RPC frameworks and other