jdk-24/hotspot/test/compiler/profiling/spectrapredefineclass_classloaders/Test.java
Roland Westrelin c0deb9e08a 8040237: nsk/jvmti/RetransformClasses/retransform001 crashed the VM on all platforms when run with with -server -Xcomp
Class redefinition may cause speculative trap clean up code to dereference dead method

Reviewed-by: kvn, coleenp
2014-07-10 15:12:48 +02:00

51 lines
1.4 KiB
Java

import java.lang.reflect.*;
public class Test {
public boolean m1(A a, Boolean early_return) {
if (early_return.booleanValue()) return true;
boolean res = m2(a);
return res;
}
public boolean m2(A a) {
boolean res = false;
if (a.getClass() == B.class) {
a.m();
} else {
res = true;
}
return res;
}
public void m3(ClassLoader loader) throws Exception {
Class Test_class = loader.loadClass("Test");
Object test = Test_class.newInstance();
Class A_class = loader.loadClass("A");
Object a = A_class.newInstance();
Class B_class = loader.loadClass("B");
Object b = B_class.newInstance();
Method m1 = Test_class.getMethod("m1", A_class, Boolean.class);
// So we don't hit uncommon trap in the next loop
for (int i = 0; i < 4000; i++) {
m4(m1, test, a, Boolean.TRUE);
m4(m1, test, b, Boolean.TRUE);
}
for (int i = 0; i < 20000; i++) {
m4(m1, test, a, Boolean.FALSE);
}
for (int i = 0; i < 4; i++) {
m4(m1, test, b, Boolean.FALSE);
}
}
public Object m4(Method m, Object test, Object a, Object early_return) throws Exception {
return m.invoke(test, a, early_return);
}
static public A a = new A();
static public B b = new B();
}