Cryptic error thrown on duplicate bindings

If the module contains a duplicate binding such as:

        binder.bind(String.class).annotatedWith(Names.named("test"));
binder.bind(String.class).annotatedWith(Names.named("test")).in(Singleton.class)
;

then the following exception is thrown:

java.lang.UnsupportedOperationException
        at
com.google.inject.InvalidBindingImpl.acceptTargetVisitor(InvalidBindingImpl.java
:34)
        at
com.google.inject.BindingProcessor.putBinding(BindingProcessor.java:252)
        at
com.google.inject.BindingProcessor.access$300(BindingProcessor.java:39)
        at
com.google.inject.BindingProcessor$4.visitUntargetted(BindingProcessor.java:177)
        at
com.google.inject.BindingProcessor$4.visitUntargetted(BindingProcessor.java:125)
        at
com.google.inject.internal.ModuleBinding$1.acceptTargetVisitor(ModuleBinding.jav
a:54)
        at
com.google.inject.internal.ModuleBinding.acceptTargetVisitor(ModuleBinding.java:
116)
        at
com.google.inject.BindingProcessor.visitBinding(BindingProcessor.java:125)
        at
com.google.inject.BindingProcessor.visitBinding(BindingProcessor.java:39)
        at
com.google.inject.internal.ModuleBinding.acceptVisitor(ModuleBinding.java:108)
        at
com.google.inject.AbstractProcessor.processCommands(AbstractProcessor.java:55)
        at
com.google.inject.InjectorBuilder.buildStatically(InjectorBuilder.java:141)
        at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:97)
        at com.google.inject.Guice.createInjector(Guice.java:92)
        at com.google.inject.Guice.createInjector(Guice.java:69)
        at com.google.inject.Guice.createInjector(Guice.java:59)
[snip]

I assume the same holds true if the duplicate binding is scattered across
different modules. The above stack-trace was produced using the trunk code.

Original issue reported on code.google.com by gili.tza...@gmail.com on 22 Nov 2008 at 5:43

frjaeger220 / google-guice

Cryptic error thrown on duplicate bindings #276