%0 Conference Proceedings %F HVC2009 %A Morvan, C. %A Pinchinat, S. %T Diagnosability of pushdown systems %B HVC2009, Haifa Verification Conference %V 6405 %P 21-33 %S LNCS %C Haifa, Israel %X Diagnosis problems of discrete-event systems consist in detecting unobservable defects during system execution. For finite-state systems, the theory is well understood and a number of effective solutions have been developed. For infinite-state systems, however, there are only few results, mostly identifying classes where the problem is undecidable. We consider higher-order pushdown systems and investigate two basic variants of diagno- sis problems: the diagnosability, which consists in deciding whether defects can be detected within a finite delay, and the bounded-latency problem, which consists in determining a bound for the delay of detecting defects %U ftp://ftp.irisa.fr/techreports/2008/PI-1904.pdf %U http://dx.doi.org/10.1007/978-3-642-19237-1_6 %8 October %D 2009