RFR: 8154064: JVMTI trace event crashes

[Staffan Larsen]

Looks good!

Thanks,
/Staffan

> On 13 apr. 2016, at 07:50, Robbin Ehn <robbin.ehn at oracle.com> wrote:
> 
> Hi all,
> 
> Please review this bug fix.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8154064
> 
> Test with tonga. (the 5 crashed tonga test no longer crashes)
> 
> Thanks!
> 
> /Robbin
> 
> diff -r 4823056a5bbd src/share/vm/prims/jvmtiExport.cpp
> --- a/src/share/vm/prims/jvmtiExport.cpp	Tue Apr 12 09:08:48 2016 +0000
> +++ b/src/share/vm/prims/jvmtiExport.cpp	Wed Apr 13 07:39:50 2016 +0200
> @@ -2260,7 +2260,7 @@
>     if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) {
>       EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s",
> JvmtiTrace::safe_get_thread_name(thread),
> -                                         object==NULL? "NULL" : java_lang_Class::as_Klass(object)->external_name()));
> +                                         object==NULL? "NULL" : object->klass()->external_name()));
> 
>       JvmtiVMObjectAllocEventMark jem(thread, h());
>       JvmtiJavaThreadEventTransition jet(thread);