It seems that the resent integration of new
gjast.jar.scrambled (version 1.57) to fix issue
46580 causes 3 javacore tests to fail. The problem
seems to be that the last token of an annotation
attribute declared as:
int newId();
is the left parenthesis rather than the semicolon,
which makes the javacore code generator generate
wrong diff when adding default value to the
attribute. Instead of
int newId() default 666;
it generates 
int newId default 666();