java crash on amd64 when switching to java perspective in eclipse

[Panagiotis Astithas]

Sean McNeil wrote:
> On Mon, 2006-02-06 at 17:24 +0200, Panagiotis Astithas wrote:
>> Sean McNeil wrote:
>>> Got the following:
>>>
>>> #
>>> # An unexpected error has been detected by HotSpot Virtual Machine:
>>> #
>>> #  SIGSEGV (0xb) at pc=0x00000008055aa9df, pid=56131, tid=0x133d000
>>> #
>>> # Java VM: Java HotSpot(TM) 64-Bit Server VM
>>> (1.5.0-p2-root_02_feb_2006_13_05 mixed mode)
>>> # Problematic frame:
>>> # J
>>> org.eclipse.jdt.internal.compiler.parser.Scanner.jumpOverMethodBody()V
>>> #
>>> # An error report file with more information is saved as
>>> hs_err_pid56131.log
>>> #
>>> # If you would like to submit a bug report, please write
>>> # a letter to freebsd-java at FreeBSD.org mailing list
>> I did some research. There is a comment with a workaround at the bottom 
>> of this page:
>>
>> http://wbeaton.blogspot.com/2005/09/eclipse-in-64-bits.html
>>
>> A more thorough discussion is here:
>>
>> https://bugs.eclipse.org/bugs/show_bug.cgi?id=71987
>>
>> The relevant JDK bug entry is here:
>>
>> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5060628
>>
>> The Sun engineer's fix is described here:
>>
>> http://blogs.sun.com/roller/page/javawithjiva/20051031
>>
>> It is reported to be fixed in jdk 1.5 update 6 and jdk 1.6 build 59.
> 
> Great!  I've read this information and guess-timated where the issue
> with REX and NEGL happens to be.  With a simple little patch I've
> managed to eliminate my repeatable crashes.  The system seems much much
> more stable now.
> 
> --- hotspot/src/cpu/amd64/vm/amd64.ad.orig      Wed Feb  8 15:18:24 2006
> +++ hotspot/src/cpu/amd64/vm/amd64.ad   Wed Feb  8 15:17:35 2006
> @@ -7246,7 +7246,7 @@
> 
>    format %{ "negl    $dst\t# int" %}
>    opcode(0xF7, 0x03);  // Opcode F7 /3
> -  ins_encode(REX_reg(dst), OpcP, RM_opc_mem(secondary, dst));
> +  ins_encode(REX_mem(dst), OpcP, RM_opc_mem(secondary, dst));
>    ins_pipe(ialu_reg);
>  %}
> 
> 


Awesome!

Thanks,

Panagiotis