RFR: 8264004: Don't use TRAPS if no exceptions are thrown [v4]

[Coleen Phillimore]

On Tue, 23 Mar 2021 21:07:02 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix load_new_class_versions and remove more traps.
>
> src/hotspot/share/prims/jvmtiRedefineClasses.cpp line 1389:
> 
>> 1387:     state->set_class_being_redefined(the_class, _class_load_kind);
>> 1388: 
>> 1389:     Thread* THREAD = current;  // for exception processing
> 
> Add `ExceptionMark em(THREAD);`

Done.

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PR: https://git.openjdk.java.net/jdk/pull/3141