Details

Autor(en) / Beteiligte

• de Gouw, Stijn
• Rot, Jurriaan
• de Boer, Frank S.
• Bubel, Richard
• Hähnle, Reiner

Titel

OpenJDK’s Java.utils.Collection.sort() Is Broken: The Good, the Bad and the Worst Case

Ist Teil von

• Computer Aided Verification, p.273-289

Ort / Verlag

Cham: Springer International Publishing

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We investigate the correctness of TimSort, which is the main sorting algorithm provided by the Java standard library. The goal is functional verification with mechanical proofs. During our verification attempt we discovered a bug which causes the implementation to crash. We characterize the conditions under which the bug occurs, and from this we derive a bug-free version that does not compromise the performance. We formally specify the new version and mechanically verify the absence of this bug with KeY, a state-of-the-art verification tool for Java.