RFR: 8154064: JVMTI trace event crashes

[Stefan Karlsson]

Looks good.

StefanK

On 2016-04-13 07:50, Robbin Ehn 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);