Fixes#322
We add an option `createPhantomSuperclasses` to `ClassHierarchy`. When set, if a superclass is missing, we create a new `PhantomClass` in its place and allow the subclass to be added.
To use, you can create the `ClassHierarchy` with the new `ClassHierarchyFactory.makeWithPhantom` methods.
Someone may have thought that we were ignoring these files, but we
aren't. From what I can tell, for these specific files, revision
tracking is intentional.
In some cases, class files will have non-abstract methods with no
bytecodes (e.g., stubs for compilation purposes). While such a class
file is invalid, we want to enable clients to handle such an error.
With these changes, Shrike will throw an InvalidClassFileException for
such cases, and WALA's IR construction code will throw a
WalaRuntimeException.
Manu Sridharan
Ben Liblit
Manu Sridharan
msridhar1