Description Olivier Thomann 2005-03-09 11:08:54 EST

Using latest, I got the following error:

Exception in thread "Text Viewer Hover Presenter" java.lang.NullPointerException
	at
org.eclipse.jdt.internal.compiler.lookup.MethodBinding.genericSignature(MethodBinding.java:339)
	at
org.eclipse.jdt.internal.compiler.lookup.MethodBinding.computeUniqueKey(MethodBinding.java:293)
	at
org.eclipse.jdt.internal.compiler.lookup.MethodBinding.computeUniqueKey(MethodBinding.java:282)
	at
org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding.computeUniqueKey(TypeVariableBinding.java:177)
	at
org.eclipse.jdt.internal.compiler.lookup.WildcardBinding.computeUniqueKey(WildcardBinding.java:267)
	at
org.eclipse.jdt.internal.compiler.lookup.ParameterizedTypeBinding.computeUniqueKey(ParameterizedTypeBinding.java:139)
	at
org.eclipse.jdt.internal.codeassist.SelectionEngine.selectFrom(SelectionEngine.java:859)
	at
org.eclipse.jdt.internal.codeassist.SelectionEngine.select(SelectionEngine.java:731)
	at org.eclipse.jdt.internal.core.Openable.codeSelect(Openable.java:140)
	at org.eclipse.jdt.internal.core.ClassFile.codeSelect(ClassFile.java:152)
	at org.eclipse.jdt.internal.core.ClassFile.codeSelect(ClassFile.java:141)
	at
org.eclipse.jdt.internal.ui.text.java.hover.AbstractJavaEditorTextHover.getHoverInfo(AbstractJavaEditorTextHover.java:108)
	at
org.eclipse.jdt.internal.ui.text.java.hover.BestMatchHover.getHoverInfo(BestMatchHover.java:102)
	at
org.eclipse.jdt.internal.ui.text.java.hover.JavaEditorTextHoverProxy.getHoverInfo(JavaEditorTextHoverProxy.java:69)
	at
org.eclipse.jface.text.TextViewerHoverManager$4.run(TextViewerHoverManager.java:160)


Steps to reproduce:
1) Start an empty workspace.  Don't change the default options.
2) Set the JDK to be a 1.5.0 JDK
3) Create a java project that is using this JDK
4) Open type java.util.Collections.
5) Go to the method:
    public static <T> T min(Collection<? extends T> coll, Comparator<? super T>
comp) {

And put the mouse on top of Comparator. You should get the stack trace.
Debugging the code it seems that the method binding is not resolved yet.

The problem seems to be in the code assist SelectionEngine class.