Entailment with Conditional Equality Constraints

  • Authors:
  • Zhendong Su;Alexander Aiken

  • Affiliations:
  • -;-

  • Venue:
  • ESOP '01 Proceedings of the 10th European Symposium on Programming Languages and Systems
  • Year:
  • 2001

Quantified Score

Hi-index 0.00

Visualization

Abstract

Equality constraints (unification constraints) have widespread use in program analysis, most notably in static polymorphic type systems. Conditional equality constraints extend equality constraints with a weak form of subtyping to allow for more accurate analyses. We give a complete complexity characterization of the various entailment problems for conditional equality constraints. Additionally, for comparison, we study a natural extension of conditional equality constraints.