Raj,
Basically it says that your code doesn't make sense because the result of
sum is invariant to the loop. I can't tell you why it fails under Blackdown
JDK1.2 for Linux (it does on my machine too) but works under Sun JDK1.2 for
Windows.
If you changed your code to something like this
sum + = (a*a*a*b) + (a*a*a*b)+ (a*a*a*b)+ (a*a*a*b);
it works because then the loop makes sense.
Rudy
-----Original Message-----
From: Rajkishore Barik <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Thursday, July 22, 1999 11:47 AM
Subject: Help needed
>Hi,
> Here is a piece of code, i am trying to execute in
> JDK1.2pre-release. But it does not seem to be running.
> The code :
>*******************************************************************
>class test {
> public static void main(String Str[]) {
> int sum=0;
> int a=7;
> int b=7;
>
> for (int i=0;i<10;i++)
> sum=(a*a*a*b) + (a*a*a*b)+ (a*a*a*b)+ (a*a*a*b);
> }
>}
>*******************************************************************
> ERROR:
>java: ../../../../src/share/java/bcopt/Loop.C:374: boolean
Loop::is_node_invariant(class Node *) const: Assertion
`_invariant_nodes_list[node->GetBlock()->GetBlockNumber()].contains(node) ==
ret_val' failed.
>SIGABRT 6* abort (generated by abort(3) routine)
> stackpointer=0xbffff47c
>
>Full thread dump Classic VM (Linux_JDK_1.2_pre-release-v2, native threads):
> "Finalizer" (TID:0x404bf320, sys_thread_t:0x80cc558, state:CW, native
ID:0xc04) prio=8
> at java.lang.Object.wait(Native Method)
> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:112)
> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
> at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:174)
> "Reference Handler" (TID:0x404bf3b0, sys_thread_t:0x80c7da0, state:CW,
native ID:0x803) prio=10
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Object.java:424)
> at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:114)
> "SIGQUIT handler" (TID:0x404bf3e0, sys_thread_t:0x80c0838, state:R,
native ID:0x402) prio=5
> "main" (TID:0x404bf1e0, sys_thread_t:0x804bf40, state:R, native
ID:0x400) prio=5
>Monitor Cache Dump:
> <unknown key> (0x404c6b49): owner "main" (0x804bf40) 1 entry
> java.lang.ref.ReferenceQueue$Lock@404BF338/404F5028: <unowned>
> Waiting to be notified:
> "Finalizer" (0x80cc558)
> java.lang.ref.Reference$Lock@404BF3C0/404F4B20: <unowned>
> Waiting to be notified:
> "Reference Handler" (0x80c7da0)
>Registered Monitor Dump:
> PCMap lock: <unowned>
> utf8 hash table: <unowned>
> JNI pinning lock: <unowned>
> JNI global reference lock: <unowned>
> BinClass lock: <unowned>
> Class linking lock: <unowned>
> System class loader lock: <unowned>
> Code rewrite lock: <unowned>
> Heap lock: <unowned>
> Monitor cache lock: owner "main" (0x804bf40) 1 entry
> Thread queue lock: owner "main" (0x804bf40) 1 entry
> Monitor registry: owner "main" (0x804bf40) 1 entry
>*******************************************************************
>
>Can somebody help me out...
>Thanx a lot..
>regards,
>Raj
>
>
>
>
>
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