Support Forums: Message List - Nasty Little JDK 1.5 Compiler Bug: final + ternary http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Tue, 21 May 2013 16:18:54 -0400 works ok on NT 4.0 http://www.theserverside.com/discussions/thread.tss?thread_id=29404
the javac -version does not exist in my jdk 1.5 version.....]]> Fri, 15 Oct 2004 04:38:54 -0400 Fri, 15 Oct 2004 04:38:54 -0400 Fri, 15 Oct 2004 04:38:54 -0400 Oct 15, 2004 Alex Wouda 0 Nasty? I think not http://www.theserverside.com/discussions/thread.tss?thread_id=29404 If using non-null initializers, like:    static final String name = false ? "Heinz": "John";it seems to work Ok.Yip, that is right. The bug happens when one side is null. Also, if it is...]]> Fri, 15 Oct 2004 01:58:45 -0400 Fri, 15 Oct 2004 01:58:45 -0400 Fri, 15 Oct 2004 01:58:45 -0400 Oct 15, 2004 Heinz Kabutz 0 It's getting more interesting while looking at generated code... http://www.theserverside.com/discussions/thread.tss?thread_id=29404     System.out.println("Heinz");
In case of -g flag it is being compiled into:
    name =...]]> Thu, 14 Oct 2004 22:10:15 -0400 Thu, 14 Oct 2004 22:10:15 -0400 Thu, 14 Oct 2004 22:10:15 -0400 Oct 14, 2004 Vitaliy Stulski 0 Nasty? I think not http://www.theserverside.com/discussions/thread.tss?thread_id=29404     static final String name = false ? "Heinz": "John";
it seems to work Ok.]]> Thu, 14 Oct 2004 21:26:25 -0400 Thu, 14 Oct 2004 21:26:25 -0400 Thu, 14 Oct 2004 21:26:25 -0400 Oct 14, 2004 Yevgeny Libman 2 Maybe.. http://www.theserverside.com/discussions/thread.tss?thread_id=29404
Nath]]> Thu, 14 Oct 2004 11:03:30 -0400 Thu, 14 Oct 2004 11:03:30 -0400 Thu, 14 Oct 2004 11:03:30 -0400 Oct 14, 2004 Nathan Lee 0 Confirmed With 1.5.0 beta http://www.theserverside.com/discussions/thread.tss?thread_id=29404 public class CompilerBugTest {
public static void main (String [] args) {
final String foo = (false ? "a" :...]]> Thu, 14 Oct 2004 10:58:49 -0400 Thu, 14 Oct 2004 10:58:49 -0400 Thu, 14 Oct 2004 10:58:49 -0400 Oct 14, 2004 Michael Kolb 0 Guarding Against Null http://www.theserverside.com/discussions/thread.tss?thread_id=29404
final String name = false ? "Heinz" : null;
So basically it won't compile obfuscated code? Not exactly "nasty".Seriously, this is not a great piece of code, I agree it should work and...]]> Thu, 14 Oct 2004 10:42:43 -0400 Thu, 14 Oct 2004 10:42:43 -0400 Thu, 14 Oct 2004 10:42:43 -0400 Oct 14, 2004 Michael Kolb 1 Nasty Little JDK 1.5 Compiler Bug: final + ternary http://www.theserverside.com/discussions/thread.tss?thread_id=29404
Ran it on Win xp JDK 1.5 final release.Indeed, it returns null... weird.
Did you also compile it with JDK 1.5 javac? The bug is in the compiler, not the JVM.
Of course I compiled it with the JDK 1.5...]]> Thu, 14 Oct 2004 08:24:57 -0400 Thu, 14 Oct 2004 08:24:57 -0400 Thu, 14 Oct 2004 08:24:57 -0400 Oct 14, 2004 han theman 0 Nasty? I think not http://www.theserverside.com/discussions/thread.tss?thread_id=29404 This case should not occur a lot and I guess Sun will soon correct this point in the upcomming release.]]> Thu, 14 Oct 2004 06:59:08 -0400 Thu, 14 Oct 2004 06:59:08 -0400 Thu, 14 Oct 2004 06:59:08 -0400 Oct 14, 2004 bruno chevalier 3 Nasty? I think not http://www.theserverside.com/discussions/thread.tss?thread_id=29404
final String name = false ? "Heinz" : null;
So basically it won't compile obfuscated code? Not exactly "nasty".Seriously, this is not a great piece of code, I agree it should work and that this is...]]> Thu, 14 Oct 2004 05:36:01 -0400 Thu, 14 Oct 2004 05:36:01 -0400 Thu, 14 Oct 2004 05:36:01 -0400 Oct 14, 2004 peter jodeleit 6 Nasty Little JDK 1.5 Compiler Bug: final + ternary http://www.theserverside.com/discussions/thread.tss?thread_id=29404 Ran it on Win xp JDK 1.5 final release.Indeed, it returns null... weird.Did you also compile it with JDK 1.5 javac? The bug is in the compiler, not the JVM.]]> Thu, 14 Oct 2004 05:18:58 -0400 Thu, 14 Oct 2004 05:18:58 -0400 Thu, 14 Oct 2004 05:18:58 -0400 Oct 14, 2004 Heinz Kabutz 1 Nasty Little JDK 1.5 Compiler Bug: final + ternary http://www.theserverside.com/discussions/thread.tss?thread_id=29404
Indeed, it returns null... weird.]]> Thu, 14 Oct 2004 04:15:37 -0400 Thu, 14 Oct 2004 04:15:37 -0400 Thu, 14 Oct 2004 04:15:37 -0400 Oct 14, 2004 han theman 2 Bug not apparent in the Linux VM http://www.theserverside.com/discussions/thread.tss?thread_id=29404
Maybe it only affects Windows VM's.

Greg]]> Thu, 14 Oct 2004 04:05:57 -0400 Thu, 14 Oct 2004 04:05:57 -0400 Thu, 14 Oct 2004 04:05:57 -0400 Oct 14, 2004 Greg Hall 0 Don't understand http://www.theserverside.com/discussions/thread.tss?thread_id=29404
final String name = false ? "Heinz" : null;System.out.println(name);When compiled using the JDK 1.5 compiler, it will print out "Heinz
I don't understand the interest of this code.Usually you use the...]]> Thu, 14 Oct 2004 03:53:41 -0400 Thu, 14 Oct 2004 03:53:41 -0400 Thu, 14 Oct 2004 03:53:41 -0400 Oct 14, 2004 Jonathan Knight 0 Nasty Little JDK 1.5 Compiler Bug: final + ternary http://www.theserverside.com/discussions/thread.tss?thread_id=29404
final String name = false ? "Heinz" : null;System.out.println(name);When compiled using the JDK 1.5 compiler, it will print out "Heinz".
Not here. I get null. Are you sure you're using 1.5.0 final...]]> Thu, 14 Oct 2004 03:21:42 -0400 Thu, 14 Oct 2004 03:21:42 -0400 Thu, 14 Oct 2004 03:21:42 -0400 Oct 14, 2004 Heinz Kabutz 0