Abstract. It is often the case at runtime that variables and registers in programs are "quasi-invariant," i.e., the distribution of the values they take on is very skewed...
We present a new representation for possibly infinite sets of possibly infinite trees. This representation makes extensive use of sharing to achieve efficiency. As much as possible...
As compilers increasingly rely on optimizations to achieve high performance, the effectiveness of source level debuggers for optimized code continues to falter. Even if values of s...
Design constraints express essential behavioural properties of a software system. Two key elements of a scheme for enforcing design constraints are presented: a logic for describin...