FULL PRODUCT VERSION :
java version "1.5.0_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_05-b05)
Java HotSpot(TM) Client VM (build 1.5.0_05-b05, mixed mode, sharing)


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP professional edition SP2

EXTRA RELEVANT SYSTEM CONFIGURATION :
Not relevant.

A DESCRIPTION OF THE PROBLEM :
When compiling the hereafter example, javac crashes with the given stack trace.
The program exhibits an erroneous assignement. Still javac should not crash.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Pase the Code snippet in the file SomeClass.java
Then compile it:

javac SomeClass.java

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Should report the ternary operator type mismatch.


ACTUAL -
> javac SomeClass.java
An exception has occurred in the compiler (1.5.0_05). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.


ERROR MESSAGES/STACK TRACES THAT OCCUR :

java.lang.NullPointerException
        at com.sun.tools.javac.code.Types.lub(Types.java:2564)
        at com.sun.tools.javac.code.Types.lub(Types.java:2578)
        at com.sun.tools.javac.code.Types.lub(Types.java:2578)
        at com.sun.tools.javac.code.Types.lub(Types.java:2554)
        at com.sun.tools.javac.comp.Attr.condType1(Attr.java:885)
        at com.sun.tools.javac.comp.Attr.condType(Attr.java:808)
        at com.sun.tools.javac.comp.Attr.visitConditional(Attr.java:789)
        at com.sun.tools.javac.tree.Tree$Conditional.accept(Tree.java:699)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:280)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:295)
        at com.sun.tools.javac.comp.Attr.visitAssign(Attr.java:1426)
        at com.sun.tools.javac.tree.Tree$Assign.accept(Tree.java:881)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:280)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:302)
        at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:897)
        at com.sun.tools.javac.tree.Tree$Exec.accept(Tree.java:728)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:280)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:315)
        at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:331)
        at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:599)
        at com.sun.tools.javac.tree.Tree$Block.accept(Tree.java:535)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:280)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:315)
        at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:532)
        at com.sun.tools.javac.tree.Tree$MethodDef.accept(Tree.java:478)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:280)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:315)
        at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:2473)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2406)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2355)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:444)
        at com.sun.tools.javac.main.Main.compile(Main.java:592)
        at com.sun.tools.javac.main.Main.compile(Main.java:544)
        at com.sun.tools.javac.Main.compile(Main.java:67)
        at com.sun.tools.javac.Main.main(Main.java:52)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

public final class SomeClass {

    private double[][] _d;

    public void foo() {
        _d=_d==null ? new double[0] : _d;
    }

}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
The source code is not correct so no need for workaround.

Release Regression From : 1.4.2
The above release value was the last known release where this 
bug was known to work. Since then there has been a regression.