VerifyError occurs for two basic reasons: 1) An error in the bytecodes. 2) An error due to a mismatch between two different class files.
It's really unusual to find a case for reason (1) but you apparently "lucked out". If this is code that runs OK in a regular Java environment but fails on Android then I would suspect a bug in the Android verifier (or perhaps a "feechur" -- some sort of limitation/restriction). Apparently fadden suspects a bug in the Android verifier as well. On Sep 25, 2:33 pm, Dirk <[email protected]> wrote: > Hi, > I'm currently trying to port the famous complex event processing > runtime "Esper" to the Android (2.2) platform and am facing a > VerifyError, which I - although reading several other post on > VerifyErrors - do not understand. > > The project I am trying to build and run contains only Java sources > (no libraries). Therefore, I assume, that if these are compiled > successfully, they would pass the verification process. But during > runtime, I get the following error: > > 09-25 18:33:27.549: WARN/dalvikvm(300): VFY: invalid switch start: at > 8, switch offset -31132, count 34530 > 09-25 18:33:27.549: WARN/dalvikvm(300): VFY: rejected Lcom/espertech/ > esper/epl/generated/EsperEPL2GrammarParser > $DFA156;.specialStateTransition (ILorg/antlr/runtime/IntStream;)I > 09-25 18:33:27.549: WARN/dalvikvm(300): Verifier rejected class Lcom/ > espertech/esper/epl/generated/EsperEPL2GrammarParser$DFA156; > 09-25 18:33:27.559: DEBUG/AndroidRuntime(300): Shutting down VM > 09-25 18:33:27.559: WARN/dalvikvm(300): threadid=1: thread exiting > with uncaught exception (group=0x4001d800) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): FATAL EXCEPTION: main > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): java.lang.VerifyError: > com.espertech.esper.epl.generated.EsperEPL2GrammarParser$DFA156 > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.espertech.esper.epl.generated.EsperEPL2GrammarParser.<init>(EsperEPL2GrammarParser.java: > 28870) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.espertech.esper.epl.generated.EsperEPL2GrammarParser.<init>(EsperEPL2GrammarParser.java: > 338) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.espertech.esper.epl.parse.ParseHelper.parse(ParseHelper.java:108) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.espertech.esper.core.EPAdministratorImpl.compileEPL(EPAdministratorImpl.java: > 299) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.espertech.esper.core.EPAdministratorImpl.createEPLStmt(EPAdministratorImpl.java: > 142) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.espertech.esper.core.EPAdministratorImpl.createEPL(EPAdministratorImpl.java: > 94) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > esper.android.EsperAndroidTest.onCreate(EsperAndroidTest.java:39) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: > 1047) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.app.ActivityThread.performLaunchActivity(ActivityThread.java: > 2627) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: > 2679) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.app.ActivityThread.access$2300(ActivityThread.java:125) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.os.Handler.dispatchMessage(Handler.java:99) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.os.Looper.loop(Looper.java:123) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > android.app.ActivityThread.main(ActivityThread.java:4627) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > java.lang.reflect.Method.invokeNative(Native Method) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > java.lang.reflect.Method.invoke(Method.java:521) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.android.internal.os.ZygoteInit > $MethodAndArgsCaller.run(ZygoteInit.java:868) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) > 09-25 18:33:27.589: ERROR/AndroidRuntime(300): at > dalvik.system.NativeStart.main(Native Method) > > The source of "EsperEPL2GrammarParser" is quite big ( > 40,000 lines) > and so is the above mentioned inner class DFA156, which mainly > contains a switch-statement (> 60 cases) and each case contains > several (> 50?) if-then-else statements. Just an idea ... when reading > the error message above (invalid switch start: at 8, switch offset > -31132, count 34530) my alarm bells ring, cause some values around > 32768 (16 bit range) always make me nervous. > > Nevertheless, I am confused with this VerifyError and would appreciate > any help getting closer to the error's source. What can I do to > encircle the error ? > > Thanks in advance, > Cheers Dirk -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
