Hello all,

We migrated to GWT 2.7 and we are facing to this issue (I know that it's a 
problem with asm version but jetty-annotations has a dependency to asm 3.1 
).
 java.lang.IncompatibleClassChangeError: class 
com.google.gwt.dev.javac.BytecodeSignatureMaker$CompileDependencyVisitor 
has interface org.objectweb.asm.ClassVisitor as super class
[ERROR]     at java.lang.ClassLoader.defineClass1(Native Method)
[ERROR]     at java.lang.ClassLoader.defineClass(Unknown Source)
[ERROR]     at java.security.SecureClassLoader.defineClass(Unknown Source)
[ERROR]     at java.net.URLClassLoader.defineClass(Unknown Source)
[ERROR]     at java.net.URLClassLoader.access$100(Unknown Source)
[ERROR]     at java.net.URLClassLoader$1.run(Unknown Source)
[ERROR]     at java.net.URLClassLoader$1.run(Unknown Source)
[ERROR]     at java.security.AccessController.doPrivileged(Native Method)
[ERROR]     at java.net.URLClassLoader.findClass(Unknown Source)
[ERROR]     at java.lang.ClassLoader.loadClass(Unknown Source)
[ERROR]     at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
[ERROR]     at java.lang.ClassLoader.loadClass(Unknown Source)
[ERROR]     at 
com.google.gwt.dev.javac.BytecodeSignatureMaker.visitCompileDependenciesInBytecode(BytecodeSignatureMaker.java:227)
[ERROR]     at 
com.google.gwt.dev.javac.BytecodeSignatureMaker.getCompileDependencySignature(BytecodeSignatureMaker.java:209)
[ERROR]     at 
com.google.gwt.dev.javac.CompiledClass.getSignatureHash(CompiledClass.java:166)
[ERROR]     at 
com.google.gwt.dev.javac.Dependencies$Ref.<init>(Dependencies.java:42)
[ERROR]     at 
com.google.gwt.dev.javac.Dependencies$Ref.<init>(Dependencies.java:37)
[ERROR]     at 
com.google.gwt.dev.javac.Dependencies.resolve(Dependencies.java:114)
[ERROR]     at 
com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:366)
[ERROR]     at 
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:580)
[ERROR]     at 
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:513)
[ERROR]     at 
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:499)
[ERROR]     at 
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:668)
[ERROR]     at 
com.google.gwt.dev.codeserver.Recompiler.initWithoutPrecompile(Recompiler.java:200)
[ERROR]     at 
com.google.gwt.dev.codeserver.Outbox.maybePrecompile(Outbox.java:82)
[ERROR]     at com.google.gwt.dev.codeserver.Outbox.<init>(Outbox.java:61)
[ERROR]     at 
com.google.gwt.dev.codeserver.CodeServer.makeOutboxes(CodeServer.java:156)
[ERROR]     at 
com.google.gwt.dev.codeserver.CodeServer.start(CodeServer.java:118)
[ERROR]     at 
com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:91)
[ERROR]     at 
com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:50)
[ERROR]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR]     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[ERROR]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
[ERROR]     at java.lang.reflect.Method.invoke(Unknown Source)
[ERROR]     at 
com.google.gwt.dev.shell.SuperDevListener$1.run(SuperDevListener.java:84)


Could you help me, pls ?

Best regards,


On Wednesday, November 19, 2014 at 5:45:44 PM UTC+1, Jens wrote:
>
> GWT 2.7. requires ASM 5.x (because of Java8 support in the future) and you 
> probably have ASM 3.x on class path as well.
>
> -- J.
>

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