RFR: 8268829: Provide an optimized way to walk the stack with Class object only [v12]

[Chen Liang]

On Sun, 17 Sep 2023 06:57:46 GMT, ExE Boss <duke at openjdk.org> wrote:

>> Mandy Chung has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix @Param due to the rename from default to class+method
>
> src/java.base/share/classes/java/lang/StackFrameInfo.java line 93:
> 
>> 91:         synchronized (this) {
>> 92:             if (type instanceof String sig) {
>> 93:                 type = JLIA.getMethodType(sig, declaringClass().getClassLoader());
> 
> Maybe there should be a `return` here:
> Suggestion:
> 
>                 return type = JLIA.getMethodType(sig, declaringClass().getClassLoader());

`type` is of type `Object`, don't think this compiles as the result type of `=` is the `type` variable's type.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15370#discussion_r1328057872