On Jun 17, 2009, at 5:40 AM, wesley wrote:
> Dear Ferg,
>
> I found a annoying bug describing below:
Thanks. I've filed a bug report. It's probably just some counting we
got wrong in the bytecode enhancement.
-- Scott
>
>
> Environment:
> Resin 4.0.0
> JDK: Sun JDK 1.6.0_14 x64 or JRockit 1.6.0_11 x64
>
> ================ test.TestServlet ===============================
> package test;
>
> import javax.servlet.*;
> import javax.servlet.http.HttpServlet;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
> import javax.inject.Current;
> import java.io.IOException;
>
> public class TestServlet extends HttpServlet {
> @Current
> TestBean bean;
>
> @Override
> protected void doGet(HttpServletRequest req, HttpServletResponse res)
> throws ServletException, IOException {
> res.getWriter().write("Hello world");
> }
> }
>
> ================ test.TestBean ===============================
> package test;
>
> import javax.context.RequestScoped;
>
> @RequestScoped
> public class TestBean {
>
> public String evilMethod(int a, int b, String c, int d) {
> return "I'm evil";
> }
>
> public String evilMethod2(int a, int b, int d, String c) {
> return "I'm evil too";
> }
>
> public String goodMethod(int a, int b, String c) {
> return "I'm good";
> }
> }
>
> =================================================
> When running this servlet at http://localhost:8080/TestServlet
> (mapped to /TestServlet in web.xml)
>
> Resin generate exceptions:
>
> error stack 1:
>
> javax.servlet.ServletException: java.lang.VerifyError: (class: test/
> TestBean$ScopeProxy, method: evilMethod signature: (IILjava/lang/
> String;I)Ljava/lang/String;) Register 0 contains wrong type
> at
> com
> .caucho
> .server
> .dispatch.ServletConfigImpl.createServlet(ServletConfigImpl.java:848)
> at
> com
> .caucho
> .server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:
> 95)
> at
> org
> .apache
> .struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:
> 452)
> at
> com
> .caucho
> .server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
> at
> com
> .caucho
> .server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
> at
> com
> .caucho
> .server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:185)
> at
> com
> .caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:
> 201)
> at
> com
> .caucho
> .server.dispatch.ServletInvocation.service(ServletInvocation.java:264)
> at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:
> 275)
> at
> com
> .caucho.server.port.TcpConnection.handleRequests(TcpConnection.java:
> 644)
> at com.caucho.server.port.TcpConnection
> $AcceptTask.doAccept(TcpConnection.java:1311)
> at com.caucho.server.port.TcpConnection
> $AcceptTask.run(TcpConnection.java:1252)
> at com.caucho.util.ThreadPool$PoolThread.runTasks(ThreadPool.java:866)
> at com.caucho.util.ThreadPool$PoolThread.run(ThreadPool.java:779)
> Caused by: java.lang.VerifyError: (class: test/TestBean$ScopeProxy,
> method: evilMethod signature: (IILjava/lang/String;I)Ljava/lang/
> String;) Register 0 contains wrong type
> at java.lang.Class.getDeclaredConstructors0(Native Method)
> at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
> at java.lang.Class.getConstructors(Class.java:1459)
> at
> com
> .caucho.config.bytecode.ScopeAdapter.generateProxy(ScopeAdapter.java:
> 163)
> at com.caucho.config.bytecode.ScopeAdapter.<init>(ScopeAdapter.java:
> 59)
> at com.caucho.config.bytecode.ScopeAdapter.create(ScopeAdapter.java:
> 64)
> at
> com.caucho.config.inject.SimpleBean.getScopeAdapter(SimpleBean.java:
> 450)
> at
> com
> .caucho
> .config.inject.InjectManager.getInstanceToInject(InjectManager.java:
> 1454)
> at
> com
> .caucho
> .config
> .program.FieldComponentProgram.inject(FieldComponentProgram.java:91)
> at
> com
> .caucho.config.inject.ComponentImpl.createNoInit(ComponentImpl.java:
> 316)
> at
> com
> .caucho
> .server
> .dispatch.ServletConfigImpl.createServletImpl(ServletConfigImpl.java:
> 895)
> at
> com
> .caucho
> .server
> .dispatch.ServletConfigImpl.createServlet(ServletConfigImpl.java:810)
> ... 14 more
>
>
> error stack 2 (with evilMethod commented):
>
> javax.servlet.ServletException: java.lang.VerifyError: (class: test/
> TestBean$ScopeProxy, method: evilMethod2 signature: (IIILjava/lang/
> String;)Ljava/lang/String;) Expecting to find object/array on stack
> at
> com
> .caucho
> .server
> .dispatch.ServletConfigImpl.createServlet(ServletConfigImpl.java:848)
> at
> com
> .caucho
> .server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:
> 95)
> at
> org
> .apache
> .struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:
> 452)
> at
> com
> .caucho
> .server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
> at
> com
> .caucho
> .server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
> at
> com
> .caucho
> .server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:185)
> at
> com
> .caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:
> 201)
> at
> com
> .caucho
> .server.dispatch.ServletInvocation.service(ServletInvocation.java:264)
> at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:
> 275)
> at
> com
> .caucho.server.port.TcpConnection.handleRequests(TcpConnection.java:
> 644)
> at com.caucho.server.port.TcpConnection
> $AcceptTask.doAccept(TcpConnection.java:1311)
> at com.caucho.server.port.TcpConnection
> $AcceptTask.run(TcpConnection.java:1252)
> at com.caucho.util.ThreadPool$PoolThread.runTasks(ThreadPool.java:866)
> at com.caucho.util.ThreadPool$PoolThread.run(ThreadPool.java:779)
> Caused by: java.lang.VerifyError: (class: test/TestBean$ScopeProxy,
> method: evilMethod2 signature: (IIILjava/lang/String;)Ljava/lang/
> String;) Expecting to find object/array on stack
> at java.lang.Class.getDeclaredConstructors0(Native Method)
> at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
> at java.lang.Class.getConstructors(Class.java:1459)
> at
> com
> .caucho.config.bytecode.ScopeAdapter.generateProxy(ScopeAdapter.java:
> 163)
> at com.caucho.config.bytecode.ScopeAdapter.<init>(ScopeAdapter.java:
> 59)
> at com.caucho.config.bytecode.ScopeAdapter.create(ScopeAdapter.java:
> 64)
> at
> com.caucho.config.inject.SimpleBean.getScopeAdapter(SimpleBean.java:
> 450)
> at
> com
> .caucho
> .config.inject.InjectManager.getInstanceToInject(InjectManager.java:
> 1454)
> at
> com
> .caucho
> .config
> .program.FieldComponentProgram.inject(FieldComponentProgram.java:91)
> at
> com
> .caucho.config.inject.ComponentImpl.createNoInit(ComponentImpl.java:
> 316)
> at
> com
> .caucho
> .server
> .dispatch.ServletConfigImpl.createServletImpl(ServletConfigImpl.java:
> 895)
> at
> com
> .caucho
> .server
> .dispatch.ServletConfigImpl.createServlet(ServletConfigImpl.java:810)
> ... 14 more
>
>
> servlet is good when evilMethod and evilMethod2 were both commented.
>
> I believe this is due to a bug in com.caucho.bytecode.JavaClass.
>
> -Wesley
>
>
> _______________________________________________
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