When dumping the field indices of these fields ---

interface I {
    public int p = 0;
}

interface I1 {
    public int x = 0;
}

interface I2 extends I {
    public int y = 1;
}

class C1 implements I1 {
    public int a;
    public int b;
    public static int c = 3;
}

class C2 extends C1 implements I2 {
    public int q;
    public static int r = 7;
    public int s;
}

class T extends Throwable {
    public int yak;
    public static int yuck = 5;
}

primitive static fields are computed incorrectly ---

Note: field: index=8 kind=2, type=I, tag=100
Note: field: index=6 kind=2, type=I, tag=100
Note: field: index=4 kind=2, type=I, tag=100
Note: field: index=3 kind=2, type=I, tag=100
Note: field: index=4 kind=2, type=I, tag=900
Note: field: index=0 kind=8, type=J, tag=700
Note: field: index=0 kind=8, type=I, tag=200
Note: field: index=0 kind=8, type=I, tag=202
ERROR: mismatched field: index=0 expected=1
Note: field: index=0 kind=8, type=I, tag=201
Note: field: index=1 kind=8, type=I, tag=300
ERROR: mismatched field: index=1 expected=7
Note: field: index=1 kind=8, type=I, tag=1000
ERROR: mismatched field: index=1 expected=5
Error : expected to find 11 fields, got 8

once this is repaired, sub-classes of Throwable also do not eliminate the backtrace field.

These problems are follow ons to the unification of field indices.