Random Term Generation for Compiler Testing in Spoofax

Testing is the most commonly used technique for raising confidence in the correctness of a piece of software, but constructing an effective test suite is expensive and prone to error. Property-based testing partly automates this process by testing whether a property holds for all randomly generated inputs, but its effectiveness depends upon the...

Well-typed programs can go wrong: A study of typing-related bugs in JVM compilers

Despite the substantial progress in compiler testing, research endeavors have mainly focused on detecting compiler crashes and subtle miscompilations caused by bugs in the implementation of compiler optimizations. Surprisingly, this growing body of work neglects other compiler components, most notably the front-end. In statically-typed...

Finding typing compiler bugs

We propose a testing framework for validating static typing procedures in compilers. Our core component is a program generator suitably crafted for producing programs that are likely to trigger typing compiler bugs. One of our main contributions is that our program generator gives rise to transformation-based compiler testing for finding...