Question on ADLC's RegClass destructor

[Krystal Mok]

Hi compiler team,

I came across this piece of code in ADLC, and I'm not sure if it's right or
not:

http://hg.openjdk.java.net/jdk9/jdk9/hotspot/file/ac291bc3ece2/src/share/vm/adlc/formsopt.cpp#l236

RegClass::~RegClass() {
  delete _classid;
}

Why do we need to delete the _classid field here? If this is needed, then a
bunch of other classes in formsopt.hpp would need the same treatment.

(I know this virtual destructor was added mainly for the two new
subclasses, but I'm just wondering about this one...)

Thanks,
Kris
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