Hi VM, Your question is off-topic on this forum. Anyway, trying to answer your question, what OS are you using? On the many flora of Unix (that conform to SVID 3, POSIX, BSD 4.3, and/or ISO 9899), you can use the abort() function from C's <stdlib.h> / C++'s <cstdlib>. I find it to be useful to instrument the throw action to cause the program to fork, have the child fork abort() so it creates a core dump, and the main fork continue with the throw action. Even better if you can get the core file to be "core.$PID" instead of just "core". :-) For other OS's, I'm not sure. HTH, --Eljay