javac dies with the following exception:
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[th125165@thurka-linux Development]$ javac example/C.java
example/C.java:18: cannot access example.a.A
file example/a/A.class not found
        public CInner(Object o) {
                      ^
An exception has occurred in the compiler (1.3.1-rc1). Please file a bug at the Java Developer Connection (http://java.sun.com/cgi-bin/bugreport.cgi). Include your program and the following diagnostic in your report. Thank you.
java.lang.NullPointerException
at com.sun.tools.javac.v8.comp.Resolve.findMemberType(Resolve.java:489)
at com.sun.tools.javac.v8.comp.Resolve.findMemberType(Resolve.java:507)
at com.sun.tools.javac.v8.comp.Resolve.findMemberType(Resolve.java:501)
at com.sun.tools.javac.v8.comp.Resolve.findType(Resolve.java:563)
at com.sun.tools.javac.v8.comp.Resolve.findIdent(Resolve.java:610)
at com.sun.tools.javac.v8.comp.Resolve.resolveIdent(Resolve.java:771)
at com.sun.tools.javac.v8.comp.Attr._case(Attr.java:1058)
at com.sun.tools.javac.v8.tree.Tree$Ident.visit(Tree.java:983)
at com.sun.tools.javac.v8.comp.Attr.attribTree(Attr.java:234)
at com.sun.tools.javac.v8.comp.Attr.attribType(Attr.java:269)
at com.sun.tools.javac.v8.comp.Enter$MemberEnter._case(Enter.java:730)
at com.sun.tools.javac.v8.tree.Tree$VarDef.visit(Tree.java:470)
at com.sun.tools.javac.v8.comp.Enter$MemberEnter.memberEnter(Enter.java:642)
at com.sun.tools.javac.v8.comp.Attr._case(Attr.java:397)
at com.sun.tools.javac.v8.tree.Tree$VarDef.visit(Tree.java:470)
at com.sun.tools.javac.v8.comp.Attr.attribTree(Attr.java:234)
at com.sun.tools.javac.v8.comp.Attr.attribStat(Attr.java:276)
at com.sun.tools.javac.v8.comp.Attr._case(Attr.java:360)
at com.sun.tools.javac.v8.tree.Tree$MethodDef.visit(Tree.java:441)
at com.sun.tools.javac.v8.comp.Attr.attribTree(Attr.java:234)
at com.sun.tools.javac.v8.comp.Attr.attribStat(Attr.java:276)
at com.sun.tools.javac.v8.comp.Attr.attribClass(Attr.java:1429)
at com.sun.tools.javac.v8.comp.Attr._case(Attr.java:347)
at com.sun.tools.javac.v8.tree.Tree$ClassDef.visit(Tree.java:402)
at com.sun.tools.javac.v8.comp.Attr.attribTree(Attr.java:234)
at com.sun.tools.javac.v8.comp.Attr.attribStat(Attr.java:276)
at com.sun.tools.javac.v8.comp.Attr.attribClass(Attr.java:1429)
at com.sun.tools.javac.v8.JavaCompiler.compile(JavaCompiler.java:378)
at com.sun.tools.javac.v8.Main.compile(Main.java:247)
at com.sun.tools.javac.Main.main(Main.java:16)
[th125165@thurka-linux Development]$

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How to reproduce:
I prepared the simplest example of this problem. This example is attached to this bug as file example.tar.gz. Unpack it for example to /tmp directory. Go to /tmp directory and issue "javac example/C.java" command. This should produce reported NPE.