--- a/src/java.base/share/classes/java/lang/ClassLoader.java Tue Dec 05 14:25:16 2017 +0100
+++ b/src/java.base/share/classes/java/lang/ClassLoader.java Tue Dec 05 09:44:32 2017 -0800
@@ -30,6 +30,7 @@
import java.io.UncheckedIOException;
import java.io.File;
import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
import java.net.URL;
import java.security.AccessController;
import java.security.AccessControlContext;
@@ -1867,7 +1868,7 @@
* to be the system class loader. During construction, the class loader
* should take great care to avoid calling {@code getSystemClassLoader()}.
* If circular initialization of the system class loader is detected then
- * an unspecified error or exception is thrown.
+ * an {@code IllegalStateException} is thrown.
*
* @implNote The system property to override the system class loader is not
* examined until the VM is almost fully initialized. Code that executes
@@ -1918,8 +1919,8 @@
// the system class loader is the built-in app class loader during startup
return getBuiltinAppClassLoader();
case 3:
- String msg = "getSystemClassLoader should only be called after VM booted";
- throw new InternalError(msg);
+ String msg = "getSystemClassLoader cannot be called during the system class loader instantiation";
+ throw new IllegalStateException(msg);
case 4:
// system fully initialized
assert VM.isBooted() && scl != null;
@@ -1969,7 +1970,17 @@
.getDeclaredConstructor(ClassLoader.class);
scl = (ClassLoader) ctor.newInstance(builtinLoader);
} catch (Exception e) {
- throw new Error(e);
+ Throwable cause = e;
+ if (e instanceof InvocationTargetException) {
+ cause = e.getCause();
+ if (cause instanceof Error) {
+ throw (Error) cause;
+ }
+ }
+ if (cause instanceof RuntimeException) {
+ throw (RuntimeException) cause;
+ }
+ throw new Error(cause.getMessage(), cause);
}
} else {
scl = builtinLoader;