twocentplain writes in with an MIT news release about Jolt, a research project designed to unfreeze software stuck in an infinite loop (for a subset of infinite loops). It uses a combination of static instrumentation (using LLVM) and a run time watchdog that checks the program state during loop iteration; when a duplicate state is detected it permits the user to take one a few actions to escape the loop. The authors claim it works well enough that the program can often continue operating properly. The original paper contains detailed case studies.
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